drm/xe/huc: Define HuC for MTL

MTL uses a versionless GSC-enabled binary.

v2: don't use the filename to identify the header type (Lucas)
v3: fix commit msg (Lucas)
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Alan Previn <alan.previn.teres.alexis@intel.com>
Cc: John Harrison <John.C.Harrison@Intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/xe/xe_uc_fw.c

@@ -113,6 +113,7 @@ struct fw_blobs_by_type {
 	fw_def(TIGERLAKE,	major_ver(i915,	guc,	tgl,	70, 5))
 
 #define XE_HUC_FIRMWARE_DEFS(fw_def, mmp_ver, no_ver)		\
+	fw_def(METEORLAKE,	no_ver(i915,	huc_gsc,	mtl))		\
 	fw_def(DG1,		no_ver(i915,	huc,		dg1))		\
 	fw_def(ALDERLAKE_P,	no_ver(i915,	huc,		tgl))		\
 	fw_def(ALDERLAKE_S,	no_ver(i915,	huc,		tgl))		\