soc/intel/alderlake: Add Kconfig for Raptor Lake

Until FSP for RPL and ADL align, mainboards using RPL should select
SOC_INTEL_RAPTORLAKE and SOC_INTEL_ALDERLAKE_PCH_* together.

Currently, ADL FSP headers and RPL FSP headers differ. Use RPL FSP
header with Raptor Lake silicon. This code can be removed once ADL
and RPL start using the same FSP.

BUG=b:229134437
BRANCH=firmware-brya-14505.B
TEST=build adlrvp_rpl_ext_ec

Signed-off-by: Bora Guvendik <bora.guvendik@intel.com>
Change-Id: Iaf95352b9cafb81f23522bcf63753d199c0420eb
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65051
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
diff --git a/src/soc/intel/alderlake/Kconfig b/src/soc/intel/alderlake/Kconfig
index 0b53281..ef1d10b 100644
--- a/src/soc/intel/alderlake/Kconfig
+++ b/src/soc/intel/alderlake/Kconfig
@@ -5,6 +5,12 @@
 	  type using the `SOC_INTEL_ALDERLAKE_PCH_*` options instead
 	  of selecting this option directly.
 
+config SOC_INTEL_RAPTORLAKE
+	bool
+	help
+	 Intel Raptorlake support. Mainboards using RPL should select
+	 SOC_INTEL_RAPTORLAKE and SOC_INTEL_ALDERLAKE_PCH_* together.
+
 config SOC_INTEL_ALDERLAKE_PCH_M
 	bool
 	select SOC_INTEL_ALDERLAKE
@@ -346,6 +352,7 @@
 config FSP_HEADER_PATH
 	string "Location of FSP headers"
 	default "src/vendorcode/intel/fsp/fsp2_0/alderlake_n/" if SOC_INTEL_ALDERLAKE_PCH_N
+	default "src/vendorcode/intel/fsp/fsp2_0/raptorlake/" if SOC_INTEL_RAPTORLAKE
 	default "src/vendorcode/intel/fsp/fsp2_0/alderlake/"
 
 config FSP_FD_PATH