Change in coreboot[master]: soc/intel/alderlake: revert renaming of CONFIG_MAX_PCIE_CLOCKS

[Rizwan Qureshi (Code Review)]

Attention is currently required from: Furquan Shaikh, Tim Wawrzynczak, Subrata Banik, Patrick Rudolph.
Rizwan Qureshi has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/52194 )

Change subject: soc/intel/alderlake: revert renaming of CONFIG_MAX_PCIE_CLOCKS
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Patch Set 3:

(1 comment)

File src/soc/intel/alderlake/Kconfig:

https://review.coreboot.org/c/coreboot/+/52194/comment/1afdb855_d8434573 
PS3, Line 173: MAX_PCIE_CLOCK_SRC
> What do you think, Rizwan?

yes, it is a better name. Will need change in all SoC.
Also, since this is just a Kconfig change I am hoping that we don't have to validate the change on all SoC platforms.