soc/intel/elkhartlake: Hook up public microcode

Change-Id: I1d975713129d0a7bce823232d225ed17ee28a04d
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60051
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by:  Felix Singer <felixsinger@posteo.net>

src/soc/intel/elkhartlake/Kconfig

@@ -28,7 +28,6 @@ config CPU_SPECIFIC_OPTIONS
 	select MP_SERVICES_PPI_V1
 	select MRC_SETTINGS_PROTECT
 	select PARALLEL_MP_AP_WORK
-	select MICROCODE_BLOB_UNDISCLOSED
 	select PLATFORM_USES_FSP2_1
 	select PMC_GLOBAL_RESET_ENABLE_LOCK
 	select SOC_INTEL_COMMON

src/soc/intel/elkhartlake/Makefile.inc

@@ -49,4 +49,7 @@ verstage-y += gpio.c
 CPPFLAGS_common += -I$(src)/soc/intel/elkhartlake
 CPPFLAGS_common += -I$(src)/soc/intel/elkhartlake/include
 
+# B0 stepping
+cpu_microcode_bins += 3rdparty/intel-microcode/intel-ucode/06-96-01
+
 endif