There's no need for it to be initalized in board_init(); it just needs
to be done before ADC / I2C / SPI initialize.
BUG=chrome-os-partner:18343
BRANCH=none
TEST=boot spring; verify EC communication and 'adc' console command still work
Change-Id: I6039848fe031222d5ca59b459adfe18fc3e8ef08
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/47182
Reviewed-by: Vic Yang <victoryang@chromium.org>
