nir: Switch the arguments to nir_foreach_instr

This matches the "foreach x in container" pattern found in many other
programming languages.  Generated by the following regular expression:

s/nir_foreach_instr(\([^,]*\),\s*\([^,]*\))/nir_foreach_instr(\2, \1)/

and similar expressions for nir_foreach_instr_safe etc.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

src/compiler/nir/nir_gather_info.c

@@ -71,7 +71,7 @@ gather_tex_info(nir_tex_instr *instr, nir_shader *shader)
 static bool
 gather_info_block(nir_block *block, void *shader)
 {
-   nir_foreach_instr(block, instr) {
+   nir_foreach_instr(instr, block) {
       switch (instr->type) {
       case nir_instr_type_intrinsic:
          gather_intrinsic_info(nir_instr_as_intrinsic(instr), shader);