Change in coreboot[master]: soc/intel/alderlake: Configure 9 I/O for ADL-N

[Maulik V Vaghela (Code Review)]

Attention is currently required from: Reka Norman, Paul Menzel, Rizwan Qureshi, Subrata Banik, Krishna P Bhat D, Usha P, Patrick Rudolph, Kangheui Won.
Maulik V Vaghela has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/59752 )

Change subject: soc/intel/alderlake: Configure 9 I/O for ADL-N
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Patch Set 2:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/59752/comment/7f033d4e_cbe1c0f0 
PS2, Line 7: soc/intel/alderlake: Configure 9 I/O for ADL-N
Please clarify number 9.
Better to word it as : Configure Root ports based on ADL-N

https://review.coreboot.org/c/coreboot/+/59752/comment/790860b6_102cbdb9 
PS2, Line 9: Select number of I/O based on PCH for Alder Lake-N
Please elaborate the changes like what are different port supported such as 9 PCIe root ports, 5 Clk req and no CPU root ports.