Change in coreboot[master]: mb/google/dedede/var/storo: Support LTE module

[zanxi chen (Code Review)]

Attention is currently required from: Martin Roth, Henry Sun, Paul Menzel, Weimin Wu.
Hello build bot (Jenkins), Patrick Georgi, Martin Roth, Henry Sun, Tao Xia, Weimin Wu, Karthik Ramasubramanian,

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

https://review.coreboot.org/c/coreboot/+/51017

to look at the new patch set (#5).

Change subject: mb/google/dedede/var/storo: Support LTE module
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mb/google/dedede/var/storo: Support LTE module

Add LTE module support into devicetree and associated GPIO configuartion.

BUG=b:177955524
BRANCH=dedede
TEST=LTE function is OK

Change-Id: I9aff9608e08eae00ab5ac8547f63bc83b62fea78
Signed-off-by: Zanxi Chen 
---
M src/mainboard/google/dedede/variants/storo/Makefile.inc
M src/mainboard/google/dedede/variants/storo/gpio.c
M src/mainboard/google/dedede/variants/storo/overridetree.cb
A src/mainboard/google/dedede/variants/storo/variant.c
4 files changed, 44 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/17/51017/5