build: fix QUILT=1 option

This broke due to the Makefile changes for building the module repo.

Makefile

@@ -7,7 +7,7 @@ export LC_ALL LANG
 empty:=
 space:= $(empty) $(empty)
 
-GLUONMAKE_EARLY = $(SUBMAKE) -C $(GLUON_ORIGOPENWRTDIR) -f $(GLUONDIR)/Makefile GLUON_TOOLS=0
+GLUONMAKE_EARLY = $(SUBMAKE) -C $(GLUON_ORIGOPENWRTDIR) -f $(GLUONDIR)/Makefile GLUON_TOOLS=0 QUILT=
 GLUONMAKE = $(SUBMAKE) -C $(GLUON_OPENWRTDIR) -f $(GLUONDIR)/Makefile
 
 ifneq ($(OPENWRT_BUILD),1)