[POWERPC] spufs: Make file-internal functions & variables static

There are a few symbols used only in one file within spufs; this change
makes them static where suitable.

Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/platforms/cell/spu_callbacks.c b/arch/powerpc/platforms/cell/spu_callbacks.c
index 47ec3be..ab39e22 100644
--- a/arch/powerpc/platforms/cell/spu_callbacks.c
+++ b/arch/powerpc/platforms/cell/spu_callbacks.c
@@ -33,7 +33,7 @@
  *	mbind, mq_open, ipc, ...
  */
 
-void *spu_syscall_table[] = {
+static void *spu_syscall_table[] = {
 #define SYSCALL(func)		sys_ni_syscall,
 #define COMPAT_SYS(func)	sys_ni_syscall,
 #define PPC_SYS(func)		sys_ni_syscall,