powerpc: Make a bunch of things static

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c
index 5a0e2dc..bb1fc9b 100644
--- a/arch/powerpc/platforms/powernv/setup.c
+++ b/arch/powerpc/platforms/powernv/setup.c
@@ -307,7 +307,7 @@
  * Returns the cpu frequency for 'cpu' in Hz. This is used by
  * /proc/cpuinfo
  */
-unsigned long pnv_get_proc_freq(unsigned int cpu)
+static unsigned long pnv_get_proc_freq(unsigned int cpu)
 {
 	unsigned long ret_freq;