[PATCH] ppc: fix stupid thinko in oprofile fix

I did something stupid in my oprofile fix, here's the obvious fix:

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/ppc/kernel/perfmon.c b/arch/ppc/kernel/perfmon.c
index 04c1878..22df9a5 100644
--- a/arch/ppc/kernel/perfmon.c
+++ b/arch/ppc/kernel/perfmon.c
@@ -45,9 +45,8 @@
 	mtpmr(PMRN_PMGC0, pmgc0);
 }
 
-#elif CONFIG_6xx
+#elif defined(CONFIG_6xx)
 /* Ensure exceptions are disabled */
-
 static void dummy_perf(struct pt_regs *regs)
 {
 	unsigned int mmcr0 = mfspr(SPRN_MMCR0);