powerpc/pseries/xcis: ansify

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

arch/powerpc/platforms/pseries/xics.c

@@ -763,7 +763,7 @@ void xics_request_IPIs(void)
 }
 #endif /* CONFIG_SMP */
 
-void xics_teardown_cpu()
+void xics_teardown_cpu(void)
 {
 	int cpu = smp_processor_id();