[M] Change in coreboot[master]: soc/amd/cezanne: Factor out common GPP clk req code

[Karthik Ramasubramanian (Code Review)]

Attention is currently required from: Robert Zieba, Jason Glenesk, Raul Rangel, Matt DeVillier, Fred Reitberger.

Karthik Ramasubramanian has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/68138 )

Change subject: soc/amd/cezanne: Factor out common GPP clk req code
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Patch Set 6:

(1 comment)

File src/soc/amd/common/block/pci/Kconfig:

https://review.coreboot.org/c/coreboot/+/68138/comment/1c4d7767_8368af43 
PS6, Line 16: 	depends on SOC_AMD_COMMON_BLOCK_PCI
Can we `select SOC_AMD_COMMON_BLOCK_PCIE_CLK_REQ` here instead of in every single SOC Kconfig?