compiler/lower_64bit_packing: rename the pass to be more generic

It can do 32-bit packing too now.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

src/compiler/nir/meson.build

@@ -103,7 +103,6 @@ files_libnir = files(
   'nir_liveness.c',
   'nir_loop_analyze.c',
   'nir_loop_analyze.h',
-  'nir_lower_64bit_packing.c',
   'nir_lower_alu_to_scalar.c',
   'nir_lower_alpha_test.c',
   'nir_lower_atomics_to_ssbo.c',
@@ -126,6 +125,7 @@ files_libnir = files(
   'nir_lower_io_to_temporaries.c',
   'nir_lower_io_to_scalar.c',
   'nir_lower_io_types.c',
+  'nir_lower_packing.c',
   'nir_lower_passthrough_edgeflags.c',
   'nir_lower_patch_vertices.c',
   'nir_lower_phis_to_scalar.c',