Change in coreboot[master]: mb/google/brya: add BASEBOARD_DIR to support different baseboard

[Zhuohao Lee (Code Review)]

Attention is currently required from: Furquan Shaikh, Zhuohao Lee.
Zhuohao Lee has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/56308 )

Change subject: mb/google/brya: add BASEBOARD_DIR to support different baseboard
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Patch Set 1:

(4 comments)

File src/mainboard/google/brya/Kconfig:

https://review.coreboot.org/c/coreboot/+/56308/comment/e5eb6155_20fac3c8 
PS1, Line 1: BOARD_GOOGLE_BASEBOARD_BRYA
> This will have to be updated to allow for different Kconfigs for different baseboards. […]

Yes, i'm going to push another patch for the Brask. I'll refer to the CL you provide. Thanks!

https://review.coreboot.org/c/coreboot/+/56308/comment/370a03c3_4f7554ab 
PS1, Line 37: config BASEBOARD_BRYA_LAPTOP
            : 	def_bool n
            : 	select SYSTEM_TYPE_LAPTOP
> There is some clean up required for this as well. […]

ok, i'll submit a patch for this.

https://review.coreboot.org/c/coreboot/+/56308/comment/a0bf4344_b09b508e 
PS1, Line 46: CHROMEOS_DRAM_PART_NUMBER_IN_CBI
> I think this is specific to brya baseboard. […]

Yes, i'll submit another CL to change the memory setting.

https://review.coreboot.org/c/coreboot/+/56308/comment/59c2ac1f_7a21972c 
PS1, Line 77: BOARD_GOOGLE_BRYA0
> This will have to be changed to BOARD_GOOGLE_BASEBOARD_BRYA. Also the string should be Google_Brya.

yes, i'll change this too.