[PATCH] uml: fix "reuse i386 cpu optimizations"

Remove RWSEM_GENERIC_SPINLOCK, it's now defined (only if needed) by the
underlying arch/i386/Kconfig.cpu.  Leave it only for x86_64.  Even there, it's
totally wrong, as they even have the code to support XCHG_ADD.

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

arch/um/Kconfig

@@ -27,10 +27,6 @@ config UID16
 	bool
 	default y
 
-config RWSEM_GENERIC_SPINLOCK
-	bool
-	default y
-
 config GENERIC_CALIBRATE_DELAY
 	bool
 	default y