kernel: do not build modules.order

It is not needed for anything on the system and skipping this saves some
build time, especially in cases where there is nothing to do.

Signed-off-by: Felix Fietkau <nbd@nbd.name>

target/linux/generic/patches-4.4/208-disable-modorder.patch

@@ -0,0 +1,34 @@
+Disable modules.order to improve build performance.
+This file is not needed for anything in LEDE
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+--- a/Makefile
++++ b/Makefile
+@@ -1115,7 +1115,6 @@ all: modules
+ 
+ PHONY += modules
+ modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
+-	$(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
+ 	@$(kecho) '  Building modules, stage 2.';
+ 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
+ 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild
+@@ -1145,7 +1144,6 @@ _modinst_:
+ 		rm -f $(MODLIB)/build ; \
+ 		ln -s $(CURDIR) $(MODLIB)/build ; \
+ 	fi
+-	@cp -f $(objtree)/modules.order $(MODLIB)/
+ 	@cp -f $(objtree)/modules.builtin $(MODLIB)/
+ 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
+ 
+--- a/scripts/Makefile.build
++++ b/scripts/Makefile.build
+@@ -92,7 +92,7 @@ modorder-target := $(obj)/modules.order
+ # We keep a list of all modules in $(MODVERDIR)
+ 
+ __build: $(if $(KBUILD_BUILTIN),$(builtin-target) $(lib-target) $(extra-y)) \
+-	 $(if $(KBUILD_MODULES),$(obj-m) $(modorder-target)) \
++	 $(if $(KBUILD_MODULES),$(obj-m)) \
+ 	 $(subdir-ym) $(always)
+ 	@:
+ 

target/linux/generic/patches-4.9/207-disable-modorder.patch

@@ -0,0 +1,34 @@
+Disable modules.order to improve build performance.
+This file is not needed for anything in LEDE
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+--- a/Makefile
++++ b/Makefile
+@@ -1193,7 +1193,6 @@ all: modules
+ 
+ PHONY += modules
+ modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
+-	$(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
+ 	@$(kecho) '  Building modules, stage 2.';
+ 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
+ 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild
+@@ -1223,7 +1222,6 @@ _modinst_:
+ 		rm -f $(MODLIB)/build ; \
+ 		ln -s $(CURDIR) $(MODLIB)/build ; \
+ 	fi
+-	@cp -f $(objtree)/modules.order $(MODLIB)/
+ 	@cp -f $(objtree)/modules.builtin $(MODLIB)/
+ 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
+ 
+--- a/scripts/Makefile.build
++++ b/scripts/Makefile.build
+@@ -93,7 +93,7 @@ modorder-target := $(obj)/modules.order
+ # We keep a list of all modules in $(MODVERDIR)
+ 
+ __build: $(if $(KBUILD_BUILTIN),$(builtin-target) $(lib-target) $(extra-y)) \
+-	 $(if $(KBUILD_MODULES),$(obj-m) $(modorder-target)) \
++	 $(if $(KBUILD_MODULES),$(obj-m)) \
+ 	 $(subdir-ym) $(always)
+ 	@:
+