zephyr: Add initial USB-C support

This includes a variety of things to get volteer to build with some
amount of USB-C support.

It seems to charge the battery and prevent booting when the battery is
too low.

Much work remains.

In particular:
- check the Kconfig help and add missing help
- possibly add a TCPM Kconfig option for grouping
- BCI1.2 event handler
- TCPMv2 event generator

BUG=b:175434113, b:176171475
BRANCH=none
TEST=build and run on volteer:
20-12-11 17:43:12.344 uart:~$ tcpci_dump 0
20-12-11 17:44:45.493   VENDOR_ID                     (0x00) = 0x0451
20-12-11 17:44:45.493   PRODUCT_ID                    (0x02) = 0x0422
20-12-11 17:44:45.493   BCD_DEV                       (0x04) = 0x0100
20-12-11 17:44:45.504   TC_REV                        (0x06) = 0x0011
20-12-11 17:44:45.504   PD_REV                        (0x08) = 0x2011
20-12-11 17:44:45.504   PD_INT_REV                    (0x0a) = 0x1010
20-12-11 17:44:45.515   ALERT                         (0x10) = 0x000f
20-12-11 17:44:45.515   ALERT_MASK                    (0x12) = 0x007f
20-12-11 17:44:45.526   POWER_STATUS_MASK             (0x14) =   0x04
20-12-11 17:44:45.526   FAULT_STATUS_MASK             (0x15) =   0x7f
20-12-11 17:44:45.526   EXT_STATUS_MASK               (0x16) =   0x00
20-12-11 17:44:45.536   ALERT_EXTENDED_MASK           (0x17) =   0x00
20-12-11 17:44:45.536   CONFIG_STD_OUTPUT             (0x18) =   0x60
20-12-11 17:44:45.536   TCPC_CTRL                     (0x19) =   0x11
20-12-11 17:44:45.547   ROLE_CTRL                     (0x1a) =   0x1a
20-12-11 17:44:45.547   FAULT_CTRL                    (0x1b) =   0x06
20-12-11 17:44:45.558   POWER_CTRL                    (0x1c) =   0x70
20-12-11 17:44:45.558   CC_STATUS                     (0x1d) =   0x13
20-12-11 17:44:45.558   POWER_STATUS                  (0x1e) =   0x8c
20-12-11 17:44:45.569   FAULT_STATUS                  (0x1f) =   0x00
20-12-11 17:44:45.569   EXT_STATUS                    (0x20) =   0x00
20-12-11 17:44:45.580   ALERT_EXT                     (0x21) =   0x00
20-12-11 17:44:45.580   DEV_CAP_1                     (0x24) = 0x1e98
20-12-11 17:44:45.580   DEV_CAP_2                     (0x26) = 0x00c5
20-12-11 17:44:45.592   STD_INPUT_CAP                 (0x28) =   0x00
20-12-11 17:44:45.592   STD_OUTPUT_CAP                (0x29) =   0x00
20-12-11 17:44:45.592   CONFIG_EXT_1                  (0x2a) =   0x00
20-12-11 17:44:45.602   MSG_HDR_INFO                  (0x2e) =   0x02
20-12-11 17:44:45.602   RX_DETECT                     (0x2f) =   0x00
20-12-11 17:44:45.613   RX_BYTE_CNT                   (0x30) =   0x00
20-12-11 17:44:45.613   RX_BUF_FRAME_TYPE             (0x31) =   0x00
20-12-11 17:44:45.613   TRANSMIT                      (0x50) =   0x00
20-12-11 17:44:45.624   VBUS_VOLTAGE                  (0x70) = 0x0000
20-12-11 17:44:45.624   VBUS_SINK_DISCONNECT_THRESH   (0x72) = 0x0000
20-12-11 17:44:45.633   VBUS_STOP_DISCHARGE_THRESH    (0x74) = 0x0000
20-12-11 17:44:45.633   VBUS_VOLTAGE_ALARM_HI_CFG     (0x76) = 0x0000
20-12-11 17:44:45.633   VBUS_VOLTAGE_ALARM_LO_CFG     (0x78) = 0x0000
20-12-11 17:44:49.544 uart:~$ ppc_dump 0
20-12-11 17:45:09.838 FUNC_SET1 [50h] = 0x0b
20-12-11 17:45:09.838 FUNC_SET2 [51h] = 0x18
20-12-11 17:45:09.838 FUNC_SET3 [52h] = 0x6a
20-12-11 17:45:09.838 FUNC_SET4 [53h] = 0xfe
20-12-11 17:45:09.838 FUNC_SET5 [54h] = 0x37
20-12-11 17:45:09.838 FUNC_SET6 [55h] = 0xc1
20-12-11 17:45:09.847 FUNC_SET7 [56h] = 0x70
20-12-11 17:45:09.847 FUNC_SET8 [57h] = 0xbd
20-12-11 17:45:09.847 FUNC_SET9 [58h] = 0x34
20-12-11 17:45:09.847 FUNC_SET10 [59h] = 0x70
20-12-11 17:45:09.847 FUNC_SET11 [5ah] = 0x24
20-12-11 17:45:09.858 FUNC_SET12 [5bh] = 0x70
20-12-11 17:45:09.858 INT_STATUS_REG1 [2fh] = 0x00
20-12-11 17:45:09.858 INT_STATUS_REG2 [30h] = 0x80
20-12-11 17:45:09.858 INT_STATUS_REG3 [31h] = 0x09
20-12-11 17:45:09.858 INT_STATUS_REG4 [32h] = 0x08
20-12-11 17:45:09.862 INT_TRIP_RISE_REG1 [20h] = 0x80
20-12-11 17:45:09.862 INT_TRIP_RISE_REG2 [21h] = 0x00
20-12-11 17:45:09.874 INT_TRIP_RISE_REG3 [22h] = 0x05
20-12-11 17:45:09.874 INT_TRIP_FALL_REG1 [23h] = 0x80
20-12-11 17:45:09.874 INT_TRIP_FALL_REG2 [24h] = 0x00
20-12-11 17:45:09.879 INT_TRIP_FALL_REG3 [25h] = 0x05
20-12-11 17:45:09.879 INT_MASK_RISE_REG1 [26h] = 0xef
20-12-11 17:45:09.879 INT_MASK_RISE_REG2 [27h] = 0xe1
20-12-11 17:45:09.892 INT_MASK_RISE_REG3 [28h] = 0xff
20-12-11 17:45:09.892 INT_MASK_FALL_REG1 [29h] = 0xff
20-12-11 17:45:09.892 INT_MASK_FALL_REG2 [2ah] = 0xef
20-12-11 17:45:09.892 INT_MASK_FALL_REG3 [2bh] = 0x8f
...
20-12-11 18:21:17.576 battery
20-12-11 18:21:17.933   Status:    0x0080 INIT
20-12-11 18:21:17.933   Param flags:00000003
20-12-11 18:21:17.933   Temp:      0x0b64 = %.1d K (%.1d C)
20-12-11 18:21:17.933   V:         0x2aa8 = 10920 mV
20-12-11 18:21:17.933   V-desired: 0x3390 = 13200 mV
20-12-11 18:21:17.944   I:         0x00bd = 189 mA(CHG)
20-12-11 18:21:17.944   I-desired: 0x0a19 = 2585 mA
20-12-11 18:21:17.944   Charging:  Allowed
20-12-11 18:21:17.944   Charge:    3 %
20-12-11 18:21:17.948   Manuf:     LG
20-12-11 18:21:17.948   Device:    AC17A8
20-12-11 18:21:17.953   Chem:      LIO
20-12-11 18:21:17.960   Serial:    0xb754
20-12-11 18:21:17.960   V-design:  0x2d1e = 11550 mV
20-12-11 18:21:17.965   Mode:      0x6001
20-12-11 18:21:17.965   Abs charge:3 %
20-12-11 18:21:17.974   Remaining: 139 mAh
20-12-11 18:21:17.974   Cap-full:  5093 mAh (4991 mAh with 98 % compensation)
20-12-11 18:21:17.983   Display:   0.0 %
20-12-11 18:21:17.983     Design:  5360 mAh
20-12-11 18:21:17.993   Time-full: 26h:21
20-12-11 18:21:17.993     Empty:   0h:0

Cq-Depend: chromium:2585918
Change-Id: I0d852169c9cbbc70603944b70f4708111abd5b42
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2587225
Reviewed-by: Keith Short <keithshort@chromium.org>

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