x86: Remove dead config option X86_CPU

This isn't being referenced anywhere, and the selects done from
it can be easily done together with all the other X86 ones.

 v2: Also adjust UML's Kconfig.x86.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
LKML-Reference: <4D7603DA02000078000351C1@vpn.id2.novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/um/Kconfig.x86 b/arch/um/Kconfig.x86
index 62f2115..02fb017 100644
--- a/arch/um/Kconfig.x86
+++ b/arch/um/Kconfig.x86
@@ -10,6 +10,8 @@
 
 config UML_X86
 	def_bool y
+	select GENERIC_FIND_FIRST_BIT
+	select GENERIC_FIND_NEXT_BIT
 
 config 64BIT
 	bool