soc/intel/apollolake: Relocate FSP-M during insertion in CBFS

Since FSP-M is run in CAR (as opposed to XIP), its default link
address may need to be changed. Since cbfstool can relocate FSP
blobs, take advantage of that feature.

Change-Id: I4353fe09d785c090843ce25ff4e654d45c64c381
Signed-off-by: Andrey Petrov <andrey.petrov@intel.com>
Reviewed-on: https://review.coreboot.org/14866
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/soc/intel/apollolake/Kconfig

@@ -124,4 +124,10 @@ config CACHE_MRC_SETTINGS
 	bool
 	default y
 
+config FSP_M_ADDR
+	hex
+	default 0xfef60000
+	help
+	  The address FSP-M will be relocated to during build time
+
 endif