intel/brw: Add brw_generator.h header

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32844>

src/intel/compiler/brw_generator.cpp

@@ -30,6 +30,7 @@
 #include "brw_eu.h"
 #include "brw_disasm_info.h"
 #include "brw_fs.h"
+#include "brw_generator.h"
 #include "brw_cfg.h"
 #include "dev/intel_debug.h"
 #include "util/mesa-sha1.h"