Change in coreboot[master]: mb/intel/adlrvp: Add support for external clock buffer

[Subrata Banik (Code Review)]

Attention is currently required from: V Sowmya, Maulik V Vaghela, Subrata Banik, Angel Pons, Tim Wawrzynczak, EricR Lai.
Subrata Banik has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/59976 )

Change subject: mb/intel/adlrvp: Add support for external clock buffer
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Patch Set 8:

(1 comment)

File src/mainboard/intel/adlrvp/Kconfig:

https://review.coreboot.org/c/coreboot/+/59976/comment/99f2d8f6_de515d95 
PS5, Line 146: config GEN3_EXTERNAL_CLOCK_BUFFER
> If pch_m, CONFIG_MAX_PCIE_CLOCK_SRC equal to CONFIG_MAX_PCIE_CLOCK_REQ. […]

yes. that's right