powerpc: Ensure global functions include their prototype

Fix a number of places where global functions were not including
their prototype. This ensures the prototype and the function match.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
diff --git a/arch/powerpc/platforms/pseries/pci.c b/arch/powerpc/platforms/pseries/pci.c
index c413ec1..67e4859 100644
--- a/arch/powerpc/platforms/pseries/pci.c
+++ b/arch/powerpc/platforms/pseries/pci.c
@@ -29,6 +29,7 @@
 #include <asm/pci-bridge.h>
 #include <asm/prom.h>
 #include <asm/ppc-pci.h>
+#include "pseries.h"
 
 #if 0
 void pcibios_name_device(struct pci_dev *dev)