[XS] Change in coreboot[main]: mb/google/brya/var/agah: Separate the AGAH DPTF OEM variant

[Paul Menzel (Code Review)]

Attention is currently required from: Boris Mittelberg, Caveh Jalali, Dinesh Gehlot, Eric Lai, Ivy Jian, Jayvik Desai, John Su, Kapil Porwal, Nick Vaccaro, Subrata Banik, Tony Huang, Wisley Chen.

Paul Menzel has posted comments on this change by John Su. ( https://review.coreboot.org/c/coreboot/+/86493?usp=email )

Change subject: mb/google/brya/var/agah: Separate the AGAH DPTF OEM variant
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Patch Set 2:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/86493/comment/e66f1473_b67c72f8?usp... :
PS2, Line 9: Use DPTF_ENABLE_OEM_VARIABLES_PROJECT_AGAH to
           : separate variant Agah code, allowing each OEM to adjust
           : in EC ASL accordingly.
Please re-flow for 72 characters per line. It’ll probably fit into two lines.

File src/ec/google/chromeec/acpi/ec.asl:

https://review.coreboot.org/c/coreboot/+/86493/comment/e11a4256_fd9861f8?usp... :
PS2, Line 383: #ifdef DPTF_ENABLE_OEM_VARIABLES_PROJECT_AGAH
             : 		Local0 = ToInteger(EOVD) & EC_OEM_VARIABLE_DATA_MASK
             : 		_SB.DPTF.ODUP(0, Local0)
             : 		Local0 = _SB.DPTF.ODGT(0)
             : 		_SB.DPTF.ODVP()
             : 		Notify (_SB.DPTF, INT3400_ODVP_CHANGED)
             : #endif
It’s common code. Please elaborate in the commit message, why the other boards not defining the macro are not impacted in their functionality.