Change in coreboot[master]: soc/mediatek/mt8186: Add RTC and clkbuf drivers

[Rex-BC Chen (Code Review)]

Attention is currently required from: Hung-Te Lin, Yuchen Huang.
Hello Hung-Te Lin, build bot (Jenkins), Yu-Ping Wu, Yuchen Huang,

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

https://review.coreboot.org/c/coreboot/+/59344

to look at the new patch set (#3).

Change subject: soc/mediatek/mt8186: Add RTC and clkbuf drivers
......................................................................

soc/mediatek/mt8186: Add RTC and clkbuf drivers

Add support for RTC and clkbuf.

TEST=boot to kernel and check log ok
BUG=b:202871018

Signed-off-by: Yuchen Huang 
Change-Id: Ia02a74f685feb2466c113a77cbfa3a7d8fedb595
---
M src/mainboard/google/corsola/romstage.c
M src/soc/mediatek/mt8186/Makefile.inc
A src/soc/mediatek/mt8186/include/soc/rtc.h
A src/soc/mediatek/mt8186/rtc.c
4 files changed, 605 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/44/59344/3