[PATCH] uml: revert wrong patch

Andi Kleen pointed out that -mcmodel=kernel does not make sense for userspace
code and would stop everything from working, and pointed out the correct fix
for the original bug (not easy to do for me).

Reverts part of commit 06837504.

Cc: Andi Kleen <ak@suse.de>
Signed-off-by: NPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

arch/um/Makefile-x86_64

@@ -4,7 +4,7 @@
 core-y += arch/um/sys-x86_64/
 START := 0x60000000
 
-_extra_flags_ = -fno-builtin -m64 -mcmodel=kernel
+_extra_flags_ = -fno-builtin -m64
 
 #We #undef __x86_64__ for kernelspace, not for userspace where
 #it's needed for headers to work!