soc/intel/xeon_sp/*/Kconfig: Refactor out and remove SOC_SPECIFIC_OPTIONS

Move specific selections to {cpx,skx,spr} and remove
dummy SOC_SPECIFIC_OPTIONS

Change-Id: I71e41deb0478bf4d04395c88fc7b68df1ea83ac0
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76939
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
diff --git a/src/soc/intel/xeon_sp/cpx/Kconfig b/src/soc/intel/xeon_sp/cpx/Kconfig
index aa344ce..f54f771 100644
--- a/src/soc/intel/xeon_sp/cpx/Kconfig
+++ b/src/soc/intel/xeon_sp/cpx/Kconfig
@@ -1,10 +1,16 @@
 ## SPDX-License-Identifier: GPL-2.0-only
 
-if SOC_INTEL_COOPERLAKE_SP
-
-config SOC_SPECIFIC_OPTIONS
-	def_bool y
+config SOC_INTEL_COOPERLAKE_SP
+	bool
+	select XEON_SP_COMMON_BASE
+	select PLATFORM_USES_FSP2_2
+	select CACHE_MRC_SETTINGS
+	select NO_FSP_TEMP_RAM_EXIT
 	select HAVE_INTEL_FSP_REPO
+	help
+	  Intel Cooper Lake-SP support
+
+if SOC_INTEL_COOPERLAKE_SP
 
 config FSP_HEADER_PATH
 	default "3rdparty/fsp/CedarIslandFspBinPkg/Include"