EC controls SPI CS pin as GPIO. This CL remove the ALT function
config. And before trigger SPI hardware reset, the driver state needs to
be disable.
BUG=chrome-os-partner:62673
TEST=manual
load into Rowan and boot up AP.
check console command accelread
BRANCH=none
Change-Id: I511c5906efbbb42b09547c61414bcc24b0217ad3
Signed-off-by: Rong Chang <rongchang@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/441485
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>