[PATCH] UML: define CONFIG_INPUT better

From: Chris Wright - define CONFIG_INPUT to shut up a config warning.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/um/Kconfig

@@ -285,7 +285,10 @@ if BROKEN
 endif
 
 config INPUT
-	bool
+	bool "Dummy option"
+	depends BROKEN
 	default n
+	help
+	This is a dummy option to get rid of warnings.
 
 source "arch/um/Kconfig.debug"