mark uboot-envtools as broken, it looks more like a place holder than an actual packaging attempt

SVN-Revision: 18079

package/uboot-envtools/Makefile

@@ -19,6 +19,7 @@ include $(INCLUDE_DIR)/package.mk
 define Package/uboot-envtools
   SECTION:=utils
   CATEGORY:=Utilities
+  DEPENDS:=@BROKEN
   TITLE:=read/modify the environment for the bootloader U-Boot
 endef