intel/compiler: Export TCS passthrough creation

Move create_passthrough_tcs() from i965 so can be used in other
contexts.

Acked-by: Jason Ekstrand <jason@jlekstrand.net>

src/intel/compiler/brw_nir.h

@@ -164,6 +164,11 @@ nir_shader *brw_nir_optimize(nir_shader *nir,
                              bool is_scalar,
                              bool allow_copies);
 
+nir_shader *brw_nir_create_passthrough_tcs(void *mem_ctx,
+                                           const struct brw_compiler *compiler,
+                                           const nir_shader_compiler_options *options,
+                                           const struct brw_tcs_prog_key *key);
+
 #define BRW_NIR_FRAG_OUTPUT_INDEX_SHIFT 0
 #define BRW_NIR_FRAG_OUTPUT_INDEX_MASK INTEL_MASK(0, 0)
 #define BRW_NIR_FRAG_OUTPUT_LOCATION_SHIFT 1