soc/intel/xeon_sp/skx: Load microcode

Update microcode on BSP before MPinit and on all APs if necessary.
When the APs already have a MCU loaded, MPinit will skip the update.

This aligns the code with other platforms that attempt to update the
microcode in MPinit even when FIT already has loaded a MCU.
Drop the UPD PcdCpuMicrocodePatchBase to prevent FSP-S from updating
MCU before MPinit runs.

Reduced code differences between SKX and CPX and will allow to
merge the codebase into one.

Change-Id: I7df6f82055a879a738fd29092e750084557bbd5c
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84848
Reviewed-by: Shuo Liu <shuo.liu@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions