Change in coreboot[master]: soc/mediatek/mt8186: Set RTC capid to 0xC0 to pass XTAL 26 MHz test

[Rex-BC Chen (Code Review)]

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

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

https://review.coreboot.org/c/coreboot/+/62290

to look at the new patch set (#8).

Change subject: soc/mediatek/mt8186: Set RTC capid to 0xC0 to pass XTAL 26 MHz test
......................................................................

soc/mediatek/mt8186: Set RTC capid to 0xC0 to pass XTAL 26 MHz test

The XTAL 26MHz test failed on krabby, so we adjust RTC capid from
default value 0x88 to 0xC0 for MT8186. We also add a new log message
to show the capid value which is read from MT6366.

This implementation is according to chapter 5.13 in MT8186 Functional
Specification.

BUG=b:218439447
TEST=set capid to 0xc0.
TEST=XTAL 26MHz test passed.

Signed-off-by: Rex-BC Chen 
Change-Id: I16ab46a5697d304e8001de231ffc9b7b7a2f9282
---
M src/soc/mediatek/mt8186/include/soc/rtc.h
M src/soc/mediatek/mt8186/rtc.c
2 files changed, 15 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/90/62290/8