sunxi: re-add rootfs build when no profile is set, fixes #17980, thanks.

Signed-off-by: Zoltan HERPAI <wigyori@uid0.hu>

SVN-Revision: 42775

target/linux/sunxi/image/Makefile

@@ -100,6 +100,8 @@ endef
 define Image/Build
 	$(call Image/Build/$(1),$(1))
 	$(call Image/Build/Profile/$(PROFILE),$(1))
+	
+	dd if=$(KDIR)/root.$(1) of=$(BIN_DIR)/openwrt-$(BOARD)-root.$(1) bs=128k conv=sync
 endef
 
 $(eval $(call BuildImage))