mb/google/snappy: add reset pin for Melfas touch controller

Melfas kernel TS driver (melfas_mip4.c) will look up "ce"
GPIO during driver probe in ACPI _DSD.
But FW does not report "ce-gpios" but "enable-gpios" in _DSD.
Kernel will obtain GPIO from _CRS by index "0" without ID.

Melfas driver does not have separate condition
for MIT-410 so driver will set TS IC power off in probe.

FW now may need to add back "reset" pin in order to hack
this condition to let Melfas driver get "useless" GPIO
so TS IC power (VTSP) will be not off during driver probe by itself.

TEST=emerge-snappy coreboot
Change-Id: Icf0451ff0c3df97cb2474e30542a2f46ba67d82a
Signed-off-by: Kevin Chiu <Kevin.Chiu@quantatw.com>
Reviewed-on: https://review.coreboot.org/22858
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
1 file changed