intel/nir: Break the linking code into a helper in brw_nir.c

Reviewed-by: Timothy Arceri <tarceri at itsqueeze.com>
Cc: mesa-stable@lists.freedesktop.org

src/intel/compiler/brw_nir.h

@@ -95,6 +95,10 @@ void brw_nir_analyze_boolean_resolves(nir_shader *nir);
 nir_shader *brw_preprocess_nir(const struct brw_compiler *compiler,
                                nir_shader *nir);
 
+void
+brw_nir_link_shaders(const struct brw_compiler *compiler,
+                     nir_shader **producer, nir_shader **consumer);
+
 bool brw_nir_lower_cs_intrinsics(nir_shader *nir,
                                  unsigned dispatch_width);
 void brw_nir_lower_vs_inputs(nir_shader *nir,