[coreboot-gerrit] Change in coreboot[master]: WIP: Use SPDs from PSP BIOS table type 0x69 based on GPIO straps

[Nikolai Vyssotski (Code Review)]

Nikolai Vyssotski has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/45278 )

Change subject: WIP: Use SPDs from PSP BIOS table type 0x69 based on GPIO straps
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Patch Set 3:

Fixed Mandolin build issue. It does not use multiple SPDs. 
Check if SPD_SOURCES is defined. If not, use the conventional way of building where SPD information is embedded into a single APCB.