npcx: Build RW_B and support sysjump to it

This patch allows a board to include another RW image in ec.bin.
The size of each copy is a quarter of the flash size on Fizz.

BUG=b:38462249
BRANCH=none
CQ-DEPEND=CL:568297
TEST=Run sysjump RW/A/B. Verify there is no size change by running
make savesizes/newsizes. Run objdump -h build/fizz/ec.obj:

Idx Name          Size      VMA       LMA       File off  Algn
  0 .image.RO     0001700c  10088000  10088000  00008000  2**0
		  CONTENTS, ALLOC, LOAD, READONLY, CODE
  1 .image.RO.key 00000340  1009f00c  100a7c40  0001f00c  2**0
		  CONTENTS, ALLOC, LOAD, READONLY, DATA
  2 .image.RW     00016ddc  1009f34c  100c8000  0001f34c  2**0
		  CONTENTS, ALLOC, LOAD, READONLY, CODE
  3 .image.RW.sign 000001b8  100b6128  100e7c00  00036128  2**0
		  CONTENTS, ALLOC, LOAD, READONLY, DATA
  4 .image.RW_B   00016ddc  100b62e0  100e8000  000362e0  2**0
		  CONTENTS, ALLOC, LOAD, READONLY, CODE
  5 .image.RW_B.sign 000001b8  100cd0bc  10107c00  0004d0bc  2**0
		  CONTENTS, ALLOC, LOAD, READONLY, DATA
  6 .padding      00000001  100cd274  10107fff  0004d274  2**0
		  CONTENTS, ALLOC, LOAD, DATA
  7 .ARM.attributes 00000014  00000000  00000000  0004d275  2**0
		  CONTENTS, READONLY

Change-Id: Iaa687c1d7d704fec4cccfa127376c8db102267fa
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/557305
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>

0 files changed, 0 insertions, 0 deletions