[S] Change in coreboot[master]: mb/google/geralt: Add mtcmos bus protection for display

[Rex-BC Chen (Code Review)]

Attention is currently required from: Hung-Te Lin, jason-ch chen, Yu-Ping Wu, Yidi Lin.

Rex-BC Chen has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/73411 )

Change subject: mb/google/geralt: Add mtcmos bus protection for display
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Patch Set 2:

(3 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/73411/comment/e3eee872_34e5ac11 
PS1, Line 9: Bus protection is a HW mechanism to avoid bus hang and incomplete bus
           : transactions. 
remove. the description is on CB:73375.

https://review.coreboot.org/c/coreboot/+/73411/comment/9ea6ba05_3ae384eb 
PS1, Line 10: Add mtcmos bus protection for display to enable Bus
            : protection HW while the receiver of the transactin is not able to
            : respond.
Add mtcmos for display to enable bus protection while bus hang and incomplete bus transactions.

https://review.coreboot.org/c/coreboot/+/73411/comment/fd830822_5f2eade6 
PS1, Line 15: on proto board.
on geralt.