Change in coreboot[master]: soc/intel/xeon_sp/cpx: add chip operation and PCIe enumeration

[9elements QA (Code Review)]

9elements QA has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/40110 )

Change subject: soc/intel/xeon_sp/cpx: add chip operation and PCIe enumeration
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Patch Set 20:

Automatic boot test returned (PASS/FAIL/TOTAL): 4/0/4
Emulation targets:
"QEMU x86 q35/ich9" using payload TianoCore : SUCCESS : https://lava.9esec.io/r/4853
"QEMU x86 q35/ich9" using payload SeaBIOS : SUCCESS : https://lava.9esec.io/r/4852
"QEMU x86 i440fx/piix4" using payload SeaBIOS : SUCCESS : https://lava.9esec.io/r/4851
"QEMU AArch64" using payload LinuxBoot_u-root_kexec : SUCCESS : https://lava.9esec.io/r/4850

Please note: This test is under development and might not be accurate at all!