Include rules.mk earlier so STAGING_DIR_HOST is available in gluon.mk

Makefile

@@ -95,11 +95,11 @@ clean:
 
 else
 
-include $(GLUONDIR)/include/gluon.mk
+include rules.mk
 
-include $(TOPDIR)/include/host.mk
+include $(GLUONDIR)/include/gluon.mk
 
-include rules.mk
+include $(INCLUDE_DIR)/host.mk
 include $(INCLUDE_DIR)/depends.mk
 include $(INCLUDE_DIR)/subdir.mk