mb/facebook/fbg1701: Add config to additional list

´config´ is removed from measure list (CB:74750)

Add 'config' to ram_stage_additional_list[] to have it measured and
verified.

BUG=NA
TEST=boot and verify coreboot logs on facebook FBG1701

Change-Id: Id4119bc3a01e11f14a091facf81964d1a71092c1
Signed-off-by: Frans Hendriks <fhendriks@eltan.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74752
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Himanshu Sahdev <himanshu.sahdev@intel.com>
Reviewed-by: Martin L Roth <gaumless@gmail.com>

src/vendorcode/eltan/security/verified_boot/Kconfig

@@ -33,6 +33,7 @@ config VENDORCODE_ELTAN_VBOOT_MANIFEST
 
 config VENDORCODE_ELTAN_OEM_MANIFEST_ITEMS
 	int "Manifest Items"
+	default 13 if INCLUDE_CONFIG_FILE
 	default 12
 
 config VENDORCODE_ELTAN_OEM_MANIFEST_ITEM_SIZE