flash_ec: fallback to servo_micro SN if servo_micro_for_board not found

This CL simply fallback the servo serial number to the generic
one if servo_micro_for_${BOARD}_serialname not found.
This might happen if the servod's invoke parameter (e.g. servod
--board=asurada) differs to the EC board to flash (e.g. hayato, symlink
to asurada), and flash_ec would query servod for
servo_micro_for_hayato_serialname, however, servod only knows
servo_micro_for_asurada_serialname, and it returns 'unknown'.

BUG=b:168074868
TEST=sudo servod -b asurada;
     make BOARD=asurada flash_ec;
     make BOARD=hayato flash_ec
BRANCH=none

Change-Id: I6e190c483dd0c596a9ba294939bc5f85d363c016
Signed-off-by: Eric Yilun Lin <yllin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2397941
Reviewed-by: Wai-Hong Tam <waihong@google.com>

0 files changed, 0 insertions, 0 deletions