[M] Change in coreboot[master]: configs/config.amd_mayan: Add defconfig file for Mayan board

[Anand Vaikar (Code Review)]

Attention is currently required from: ritul guru, Paul Menzel, Eric Lai, Fred Reitberger, Felix Held.

Anand Vaikar has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/74057 )

Change subject: configs/config.amd_mayan: Add defconfig file for Mayan board
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Patch Set 3:

(3 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/74057/comment/68c4d48c_63385b5d 
PS2, Line 7: configs/config.amd_mayan:Add
> Please add a space after the colon.

Done

https://review.coreboot.org/c/coreboot/+/74057/comment/14c9eedc_9865596e 
PS2, Line 7: the
> The article could be omitted in the summary.

Done

https://review.coreboot.org/c/coreboot/+/74057/comment/bdfeaa7f_0add30f4 
PS2, Line 8:
> What is the difference to the default config created for that board?

This file (config.amd_mayan) introduces the set of default configs we are using for mayan. There is no default config file added so far for mayan in "configs/" folder and all the configs are picked up from Kconfig files.