ir3: Use common shading rate lookup table

This should be identical to the old one.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36892>

src/freedreno/ir3/ir3_nir_lower_shading_rate.c

@@ -5,18 +5,7 @@
 
 #include "compiler/nir/nir_builder.h"
 #include "ir3_nir.h"
-
-/* Values written in VS/GS to gl_PrimitiveShadingRateEXT have to
- * be translated into HW internal representation.
- */
-static const uint32_t vk_to_hw_shading_rate_lut[] = {
-   0, 4, 8, 11, 1, 5, 9, 11, 2, 6, 10, 11, 11, 11, 11, 11};
-
-/* Values read from gl_ShadingRateEXT in FS have to be translated from
- * HW representation.
- */
-static const uint32_t hw_to_vk_shading_rate_lut[] = {
-   0, 4, 8, 11, 1, 5, 9, 11, 2, 6, 10, 11, 11, 11, 11, 11};
+#include "common/freedreno_vrs.h"
 
 static nir_deref_instr *
 create_lut(nir_builder *b, const uint32_t *lut, uint32_t lut_size,