x86, uml: fix uml with generic find_next_bit for x86

Update UML to use the generic bits too.
Signed-off-by: NAlexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/um/Kconfig.i386

@@ -39,6 +39,10 @@ config ARCH_REUSE_HOST_VSYSCALL_AREA
 	bool
 	default y
 
+config GENERIC_FIND_NEXT_BIT
+	bool
+	default y
+
 config GENERIC_HWEIGHT
 	bool
 	default y

arch/um/Kconfig.x86_64

@@ -34,6 +34,10 @@ config SMP_BROKEN
 	bool
 	default y
 
+config GENERIC_FIND_NEXT_BIT
+	bool
+	default y
+
 config GENERIC_HWEIGHT
 	bool
 	default y