soc/intel/xeon_sp/gnr: Add Kconfig symbols for SKUs GNR-AP and GNR-SP

Granite Rapids SoC has 2 SKUs, a.k.a. GNR-AP and GNR-SP, which
use different FSP headers/binaries. Add Kconfig items to support
these SKU types.

Change-Id: Ie3a2d603f0a2c303e8f3c0911598742fbc25d73a
Signed-off-by: Shuo Liu <shuo.liu@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88897
Reviewed-by: Frans Hendriks <fhendriks@eltan.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Wilson-MiTACComputing <wilson.chien@mitaccomputing.com>
Reviewed-by: Mark Chang <mark.chang@mitaccomputing.com>
Reviewed-by: Schumi Chu
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/intel/avenuecity_crb/Kconfig

@@ -5,7 +5,7 @@ if BOARD_INTEL_AVENUECITY_CRB
 config BOARD_SPECIFIC_OPTIONS
 	def_bool y
 	select BOARD_ROMSIZE_KB_65536
-	select SOC_INTEL_GRANITERAPIDS
+	select SOC_INTEL_GRANITERAPIDS_AP
 	select SUPERIO_ASPEED_AST2400
 	select HAVE_ACPI_TABLES
 	select IPMI_KCS

src/mainboard/intel/beechnutcity_crb/Kconfig

@@ -5,7 +5,7 @@ if BOARD_INTEL_BEECHNUTCITY_CRB
 config BOARD_SPECIFIC_OPTIONS
 	def_bool y
 	select BOARD_ROMSIZE_KB_65536
-	select SOC_INTEL_GRANITERAPIDS
+	select SOC_INTEL_GRANITERAPIDS_SP
 	select SUPERIO_ASPEED_AST2400
 	select HAVE_ACPI_TABLES
 	select IPMI_KCS

src/mainboard/mitaccomputing/r520g6sb/Kconfig

@@ -5,7 +5,7 @@ if BOARD_MITAC_COMPUTING_R520G6SB
 config BOARD_SPECIFIC_OPTIONS
 	def_bool y
 	select BOARD_ROMSIZE_KB_65536
-	select SOC_INTEL_GRANITERAPIDS
+	select SOC_INTEL_GRANITERAPIDS_SP
 	select SUPERIO_ASPEED_AST2400
 	select CONSOLE_OVERRIDE_LOGLEVEL
 	select HAVE_ACPI_TABLES

src/mainboard/mitaccomputing/sc513g6/Kconfig

@@ -5,7 +5,7 @@ if BOARD_MITAC_COMPUTING_SC513G6
 config BOARD_SPECIFIC_OPTIONS
 	def_bool y
 	select BOARD_ROMSIZE_KB_65536
-	select SOC_INTEL_GRANITERAPIDS
+	select SOC_INTEL_GRANITERAPIDS_SP
 	select SUPERIO_ASPEED_AST2400
 	select CONSOLE_OVERRIDE_LOGLEVEL
 	select HAVE_ACPI_TABLES

src/soc/intel/xeon_sp/gnr/Kconfig

@@ -18,6 +18,18 @@ config SOC_INTEL_GRANITERAPIDS
 	help
 	  Intel Granite Rapids support
 
+config SOC_INTEL_GRANITERAPIDS_AP
+	bool
+	select SOC_INTEL_GRANITERAPIDS
+	help
+	  Intel Granite Rapids AP support
+
+config SOC_INTEL_GRANITERAPIDS_SP
+	bool
+	select SOC_INTEL_GRANITERAPIDS
+	help
+	  Intel Granite Rapids SP support
+
 if SOC_INTEL_GRANITERAPIDS
 
 config CHIPSET_DEVICETREE