nir: move data.descriptor_set above data.index for better packing

4 bytes down

Reviewed-by: Connor Abbott <cwabbott0@gmail.com>

src/compiler/nir/nir.h

@@ -436,16 +436,16 @@ typedef struct nir_variable {
        */
       enum gl_access_qualifier access:8;
 
-      /**
-       * output index for dual source blending.
-       */
-      unsigned index;
-
       /**
        * Descriptor set binding for sampler or UBO.
        */
       unsigned descriptor_set:5;
 
+      /**
+       * output index for dual source blending.
+       */
+      unsigned index;
+
       /**
        * Initial binding point for a sampler or UBO.
        *