Reading nvdata from non-volatile flash storage. With this patch, it will
pass the firmware test that corrupts FW_MAIN_A and boots up with
FW_MAIN_B.
BUG=b:80501386
BRANCH=none
Test=test_that --board=kukui 172.23.213.147 firmware_CorruptFwSigA
Change-Id: I9ef6bff019ee986ff018202bfd4d4a875526ec6c
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/c/30701
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: You-Cheng Syu <youcheng@google.com>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>