soc/amd/mendocino: Specify and use FSP binaries for platform

Specify the default path to, and automatically include the FSP binaries
needed to boot a board if USE_AMD_BLOBS is selected. Simplifies board
configs, and matches use in previous patforms.

TEST=build/boot google/skyrim

Change-Id: Ic837d264327723c8dc18a60fb16e8d41fe38b44e
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77625
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>

src/soc/amd/mendocino/Kconfig

@@ -3,6 +3,7 @@
 config SOC_AMD_REMBRANDT_BASE
 	bool
 	select ACPI_SOC_NVS
+	select ADD_FSP_BINARIES if USE_AMD_BLOBS
 	select ARCH_X86
 	select BOOT_DEVICE_SUPPORTS_WRITES if BOOT_DEVICE_SPI_FLASH
 	select CACHE_MRC_SETTINGS
@@ -111,6 +112,20 @@ config CHIPSET_DEVICETREE
 	default "soc/amd/mendocino/chipset_mendocino.cb" if SOC_AMD_MENDOCINO
 	default "soc/amd/mendocino/chipset_rembrandt.cb"
 
+config FSP_M_FILE
+	string "FSP-M (memory init) binary path and filename"
+	depends on ADD_FSP_BINARIES
+	default "3rdparty/amd_blobs/mendocino/MENDOCINO_M.fd" if SOC_AMD_MENDOCINO
+	help
+	  The path and filename of the FSP-M binary for this platform.
+
+config FSP_S_FILE
+	string "FSP-S (silicon init) binary path and filename"
+	depends on ADD_FSP_BINARIES
+	default "3rdparty/amd_blobs/mendocino/MENDOCINO_S.fd" if SOC_AMD_MENDOCINO
+	help
+	  The path and filename of the FSP-S binary for this platform.
+
 config EARLY_RESERVED_DRAM_BASE
 	hex
 	default 0x2000000