Change in coreboot[master]: device + util/sconfig: introduce new device `gpio`

[Michael Niewöhner (Code Review)]

Hello  Felix Singer, build bot (Jenkins), Nico Huber, Patrick Georgi, Martin Roth, Furquan Shaikh, Paul Menzel, Tim Wawrzynczak, Aaron Durbin, Patrick Rudolph,

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

https://review.coreboot.org/c/coreboot/+/48582

to look at the new patch set (#4).

Change subject: device + util/sconfig: introduce new device `gpio`
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device + util/sconfig: introduce new device `gpio`

Introduce a new device `gpio` that is going to be used for generic
abstraction of gpio operations in the devicetree.

This change adds the nev device type to sconfig and adds generic gpio
operations to the `device_operations` struct.

Change-Id: Ic4572ad8b37bd1afd2fb213b2c67fb8aec536786
Signed-off-by: Michael Niewöhner 
---
M src/device/device_const.c
M src/device/device_util.c
M src/include/device/device.h
A src/include/device/gpio.h
M src/include/device/path.h
M util/sconfig/lex.yy.c_shipped
M util/sconfig/main.c
M util/sconfig/sconfig.l
M util/sconfig/sconfig.tab.c_shipped
M util/sconfig/sconfig.tab.h_shipped
M util/sconfig/sconfig.y
11 files changed, 335 insertions(+), 390 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/82/48582/4