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

[zanxi chen (Code Review)]

Attention is currently required from: Martin Roth, zanxi chen, 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 (#4).

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

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/17/51017/4