[POWERPC] Turn off debugging in arch/powerpc/kernel/pci_64.c

Commit 3d5134ee left debugging turned on
in arch/powerpc/kernel/pci_64.c.  This turns it off again.
Signed-off-by: NMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

arch/powerpc/kernel/pci_64.c

@@ -11,7 +11,7 @@
  *      2 of the License, or (at your option) any later version.
  */
 
-#define DEBUG
+#undef DEBUG
 
 #include <linux/kernel.h>
 #include <linux/pci.h>