mb/google/volteer: move volteer-specific GPIOs to variant gpio.c

- Move the GPIOs that are likely to be volteer-specific (mostly
peripherals) to reside in variants/volteer/gpio.c so that
variants don't have to override too many GPIO settings.

- Modify malefor's gpio.c to adjust for the changes to baseboard's
gpio.c.

- Remove unused GPP_C3 (USB4_SMB_SCL) and GPP_C4 (USB4_SMB_SCA)
settings.

- Remove unused GPP_D9, GPP_D10, GPP_D11, and GPP_D12 settings.

- Remove unused GPP_E8 (SLP_S0IX), COEX, WWAN, and SNDW related
  settings for malefor.

- Remove unused GPP_R4 (HDA_RST_L) setting.

BUG=b:157597158
TEST="emerge-volteer coreboot chromeos-bootimage", flash and boot
volteer SKU4 to kernel.

Change-Id: Ib2f384f539d55a3a8d4a7608336ef22aca3d8c4f
Signed-off-by: Nick Vaccaro <nvaccaro@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41797
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>

0 files changed, 0 insertions, 0 deletions