[L] Change in coreboot[main]: soc/xeon_sp: Initially add N-1 IBL codes

[Shuo Liu (Code Review)]

Shuo Liu has abandoned this change. ( https://review.coreboot.org/c/coreboot/+/81315?usp=email )

Change subject: soc/xeon_sp: Initially add N-1 IBL codes
......................................................................

Abandoned