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/lib/feature-fixups.c b/arch/powerpc/lib/feature-fixups.c
index 7a8a748..7ce3870 100644
--- a/arch/powerpc/lib/feature-fixups.c
+++ b/arch/powerpc/lib/feature-fixups.c
@@ -164,7 +164,7 @@
 	return (unsigned long)p - (unsigned long)entry;
 }
 
-void test_basic_patching(void)
+static void test_basic_patching(void)
 {
 	extern unsigned int ftr_fixup_test1;
 	extern unsigned int end_ftr_fixup_test1;