intel/genxml: Add all xml files as pack dependencies

Since the output can now depend on other imported xml files, we need
to add them all as dependencies to ensure that if any xml file is
changed, then all pack files are rebuilt.

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20593>

src/intel/genxml/meson.build

@@ -37,6 +37,9 @@ gen_xml_rt_files = [
 ]
 
 gen_pack_header_deps = files('intel_genxml.py', 'util.py')
+foreach f : gen_xml_files + gen_xml_rt_files
+  gen_pack_header_deps += files(f)
+endforeach
 
 genX_xml_h = custom_target(
   'genX_xml.h',