Change in coreboot[master]: soc/intel/tigerlake: Add code for early tcss

[Brandon Breitenstein (Code Review)]

Brandon Breitenstein has uploaded a new patch set (#13) to the change originally created by Shaunak Saha. ( https://review.coreboot.org/c/coreboot/+/37870 )

Change subject: soc/intel/tigerlake: Add code for early tcss
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soc/intel/tigerlake: Add code for early tcss

In order for USB Type-C to be detected prior to loading Kernel
PMC IPC driver is needed to communicate with PMC in order to
correctly set the USB Mux settings. This patch is adding in
support for early detection of both USB and Display Port.

BUG=b:141608957
BRANCH=NONE
TEST: built and booted TGL U RVP

Signed-off-by: Shaunak Saha 
Change-Id: I45c3fe9d4a2ec2f2f51b78cca2bd7e623540c00e
Signed-off-by: Brandon Breitenstein 
---
M src/soc/intel/tigerlake/Makefile.inc
A src/soc/intel/tigerlake/early_tcss.c
2 files changed, 167 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/70/37870/13