mb/google/corsola: set up open-drain ChromeOS pins

Set open-drain GPIOs for ChromeOS as input and high-z mode.
After applying this patch, we can measure these pins from 1.0V to
correct voltage (1.8V) to prevent wrong judgement of low/high.

Reference document:
MT8186_SoC_Pinmux_V1_1

BUG=b:209342636
TEST=measure pins voltage 1.8V on kingler board

Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: Ib55a773bb63404a1b952f7e7645eb7aba6638b00
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60002
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>

0 files changed, 0 insertions, 0 deletions