[M] Change in coreboot[master]: mb/google/geralt: Configure firmware display for eDP panel

[Yu-Ping Wu (Code Review)]

Attention is currently required from: Hung-Te Lin, Rex-BC Chen.

Yu-Ping Wu has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/68490 )

Change subject: mb/google/geralt: Configure firmware display for eDP panel
......................................................................

Patch Set 5:

(4 comments)

File src/mainboard/google/geralt/display.h:

https://review.coreboot.org/c/coreboot/+/68490/comment/957b51b6_54779f64 
PS5, Line 8: bool
If there's no good reason, please use `int` as the return type.

File src/mainboard/google/geralt/display.c:

https://review.coreboot.org/c/coreboot/+/68490/comment/60be296b_c3972c8e 
PS5, Line 47: false
-1

https://review.coreboot.org/c/coreboot/+/68490/comment/dcebb434_999407d2 
PS5, Line 63: true
0

File src/mainboard/google/geralt/mainboard.c:

https://review.coreboot.org/c/coreboot/+/68490/comment/ac9b4eb8_215d51a6 
PS5, Line 15: !
And here