btmon: Add support for decoding Basic Audio Annoucements

This adds support for decoding Basic Audio Announcements as shown
on:

Basic Audio Profile / Profile Specification
Page 36 of 146

Table 3.15: Format of BASE used in Basic Audio Announcements

< HCI Command: LE Set Periodic Advertising Data (0x08|0x003f) plen 36
        Handle: 0
        Operation: Complete ext advertising data (0x03)
        Data length: 0x21
        Service Data: Basic Audio Announcement (0x1851)
          Presetation Delay: 40000
          Number of Subgroups: 1
            Subgroup #0:
            Number of BIS(s): 1
            Codec: Reserved (0x06)
            Codec Specific Configuration: 010101020403010000020428
            Metadata: 020202
              BIS #0:
              Index: 1
              Codec Specific Configuration:

1 files changed, 28 insertions, 0 deletions

diff --git a/monitor/bt.h b/monitor/bt.h
index e9f72de36..644c97c98 100644
--- a/monitor/bt.h
+++ b/monitor/bt.h
@@ -3517,6 +3517,34 @@ struct bt_hci_evt_le_per_sync_established {
 	uint8_t  clock_accuracy;
 } __attribute__ ((packed));
 
+struct bt_hci_le_pa_base_codec {
+	uint8_t  id;
+	uint16_t cid;
+	uint16_t vid;
+} __attribute__ ((packed));
+
+struct bt_hci_lv_data {
+	uint8_t  len;
+	uint8_t  data[];
+} __attribute__ ((packed));
+
+struct bt_hci_le_pa_base_bis {
+	uint8_t  index;
+	struct bt_hci_lv_data codec_cfg[];
+} __attribute__ ((packed));
+
+struct bt_hci_le_pa_base_subgroup {
+	uint8_t  num_bis;
+	struct bt_hci_le_pa_base_codec codec;
+	uint8_t  data[];
+} __attribute__ ((packed));
+
+struct bt_hci_le_pa_base_data {
+	uint8_t  pd[3];
+	uint8_t  num_subgroups;
+	struct bt_hci_le_pa_base_subgroup subgroups[];
+} __attribute__ ((packed));
+
 #define BT_HCI_EVT_LE_PA_REPORT			0x0f
 struct bt_hci_le_pa_report {
 	uint16_t handle;