[PATCH] uml: Makes "make help ARCH=um" work.

Makes "make help ARCH=um" work.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade_spam@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/um/Makefile

@@ -209,3 +209,9 @@ $(ARCH_DIR)/util: FORCE
 	$(Q)$(MAKE) $(build)=$@
 
 export SUBARCH USER_CFLAGS OS
+
+all: linux
+
+define archhelp
+  echo  '* linux	- Binary kernel image (./linux)'
+endef