google/snappy: Update EC keyboard backlight flag by SKU ID

Set AP SKU ID by ec command EC_CMD_SET_SKU_ID to update EC keyboard backlight
flag.

BUG=b:65359225
BRANCH=reef
TEST=emerge-snappy coreboot
Change-Id: I1153aa0b89250c55f311dd93a01fcef47afd7292
Signed-off-by: Kevin Chiu <Kevin.Chiu@quantatw.com>
Reviewed-on: https://review.coreboot.org/21400
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
4 files changed