r600g: store reloc information in bo structure

Allow fast lookup of relocation information & id which
was a CPU time consumming operation.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
diff --git a/src/gallium/winsys/r600/drm/r600_priv.h b/src/gallium/winsys/r600/drm/r600_priv.h
index ee48754..4619207 100644
--- a/src/gallium/winsys/r600/drm/r600_priv.h
+++ b/src/gallium/winsys/r600/drm/r600_priv.h
@@ -66,6 +66,8 @@
 	boolean				shared;
 	int64_t				last_busy;
 	boolean				set_busy;
+	struct r600_reloc		*reloc;
+	unsigned			reloc_id;
 };
 
 struct r600_bo {