build root filesystems and install them in $(BIN_DIR)

Signed-off-by: Florian Fainelli <florian@openwrt.org>

SVN-Revision: 34214

target/linux/sparc/image/Makefile

@@ -17,4 +17,13 @@ define Image/BuildKernel
 #	cp $(KDIR)/vmlinux.elf $(BIN_DIR)/$(IMG_PREFIX)-vmlinux.elf
 endef
 
+define Image/Build/squashfs
+	$(call prepare_generic_squashfs,$(KDIR)/root.squashfs)
+endef
+
+define Image/Build
+	$(call Image/Build/$(1))
+	dd if=$(KDIR)/root.$(1) of=$(BIN_DIR)/openwrt-$(BOARD)-root.$(1) bs=128k conv=sync
+endef
+
 $(eval $(call BuildImage))