gpio: add a function to read GPIO array as base-2 value
This adds gpio_base2_value() which reads an array of 2-state
GPIOs and returns a base-2 value, where gpio[0] represents the
least significant bit.
BUG=none
BRANCH=none
TEST=tested with follow-up patches for pinky
Change-Id: Ia7ffc16eb60e93413c0812573b9cf0999b92828e
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/228323
Reviewed-by: Julius Werner <jwerner@chromium.org>
2 files changed
