[PATCH] uml: micro fixups to arch Kconfig

Remove a stone-age comment (UM *does* have a MMU, i.e.  the host), and fix a
dependency (introduced in commit 02edeb58) to
do what was intended.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>