intel/common: move gen_debug to intel/dev

libintel_common depends on libintel_compiler, but it contains debug
functionality that is needed by libintel_compiler.  Break the circular
dependency by moving gen_debug files to libintel_dev.

Suggested-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

src/intel/compiler/brw_compile_sf.c

@@ -24,7 +24,7 @@
 #include "brw_compiler.h"
 #include "brw_eu.h"
 
-#include "common/gen_debug.h"
+#include "dev/gen_debug.h"
 
 struct brw_sf_compile {
    struct brw_codegen func;