intel/genxml/icl: Generate packing headers

Move build system changes in to one patch (Ken, Emil)

Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>

src/intel/genxml/genX_pack.h

@@ -46,6 +46,8 @@
 #  include "genxml/gen9_pack.h"
 #elif (GEN_VERSIONx10 == 100)
 #  include "genxml/gen10_pack.h"
+#elif (GEN_VERSIONx10 == 110)
+#  include "genxml/gen11_pack.h"
 #else
 #  error "Need to add a pack header include for this gen"
 #endif