MIPS: Fix global namespace pollution in arch/mips/kernel/smp-up.c

The following symbols in arch/mips/kernel/smp-up.c are needlessly
defined global:

up_send_ipi_single()
up_init_secondary()
up_smp_finish()
up_cpus_done()
up_boot_secondary()
up_smp_setup()
up_prepare_cpus()

This patch makes the symbols static.

Build-tested using malta_defconfig.
Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@movial.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/kernel/smp-up.c

@@ -13,7 +13,7 @@
 /*
  * Send inter-processor interrupt
  */
-void up_send_ipi_single(int cpu, unsigned int action)
+static void up_send_ipi_single(int cpu, unsigned int action)
 {
 	panic(KERN_ERR "%s called", __func__);
 }
@@ -27,31 +27,31 @@ static inline void up_send_ipi_mask(cpumask_t mask, unsigned int action)
  *  After we've done initial boot, this function is called to allow the
  *  board code to clean up state, if needed
  */
-void __cpuinit up_init_secondary(void)
+static void __cpuinit up_init_secondary(void)
 {
 }
 
-void __cpuinit up_smp_finish(void)
+static void __cpuinit up_smp_finish(void)
 {
 }
 
 /* Hook for after all CPUs are online */
-void up_cpus_done(void)
+static void up_cpus_done(void)
 {
 }
 
 /*
  * Firmware CPU startup hook
  */
-void __cpuinit up_boot_secondary(int cpu, struct task_struct *idle)
+static void __cpuinit up_boot_secondary(int cpu, struct task_struct *idle)
 {
 }
 
-void __init up_smp_setup(void)
+static void __init up_smp_setup(void)
 {
 }
 
-void __init up_prepare_cpus(unsigned int max_cpus)
+static void __init up_prepare_cpus(unsigned int max_cpus)
 {
 }