intel: Allocate prog_data::[pull_]param deeper inside the compiler

Now that we're always growing the param array as-needed, we can
allocate the param array in common code and stop repeating the
allocation everywere.  In order to keep things sane, we ralloc the
[pull_]param array off of the compile context and then steal it back
to a NULL context later.  This doesn't get us all the way to where
prog_data::[pull_]param is purely an out parameter of the back-end
compiler but it gets us a lot closer.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

src/intel/compiler/brw_nir.h

@@ -134,12 +134,13 @@ enum brw_reg_type brw_type_for_nir_type(const struct gen_device_info *devinfo,
 
 enum glsl_base_type brw_glsl_base_type_for_nir_type(nir_alu_type type);
 
-void brw_nir_setup_glsl_uniforms(nir_shader *shader,
+void brw_nir_setup_glsl_uniforms(void *mem_ctx, nir_shader *shader,
                                  const struct gl_program *prog,
                                  struct brw_stage_prog_data *stage_prog_data,
                                  bool is_scalar);
 
-void brw_nir_setup_arb_uniforms(nir_shader *shader, struct gl_program *prog,
+void brw_nir_setup_arb_uniforms(void *mem_ctx, nir_shader *shader,
+                                struct gl_program *prog,
                                 struct brw_stage_prog_data *stage_prog_data);
 
 void brw_nir_analyze_ubo_ranges(const struct brw_compiler *compiler,