Change in coreboot[master]: qualcomm/sc7280: gpio: Support eGPIO scheme

[Ravi kumar (Code Review)]

Attention is currently required from: Shelley Chen, Ravi kumar, Paul Menzel, mturney mturney.
Hello Shelley Chen, build bot (Jenkins), Taniya Das, Julius Werner, mturney mturney,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/55078

to look at the new patch set (#11).

Change subject: qualcomm/sc7280: gpio: Support eGPIO scheme
......................................................................

qualcomm/sc7280: gpio: Support eGPIO scheme

eGPIO is a scheme which allows special power island domain IOs to be
reused as regular chip GPIOs by muxing regular TLMM functions with
Island Domain functions. With this scheme, an IO can be controlled
both by APPS and Island processor.

egpio_configure_pins() API to configure the eGPIO's for a given range
specified from start to end.

BUG=b:182963902
TEST=Validated on qualcomm sc7280 development board by configuring the
the existing supported GPIO's to function as eGPIO's

Signed-off-by: Taniya Das 
Change-Id: I2c54a14c50fb7b5921d1961d2de83098ed2d4358
---
M src/soc/qualcomm/sc7280/Makefile.inc
M src/soc/qualcomm/sc7280/include/soc/gpio.h
A src/soc/qualcomm/sc7280/sc7280_egpio.c
3 files changed, 39 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/78/55078/11