sched: move weighted_cpuload into #ifdef CONFIG_SMP section

weighted_cpuload is only used on SMP. move it into the CONFIG_SMP
section.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/kernel/sched.c b/kernel/sched.c
index f36f549..727bdef 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -1637,12 +1637,6 @@
 	return cpu_curr(task_cpu(p)) == p;
 }
 
-/* Used instead of source_load when we know the type == 0 */
-static unsigned long weighted_cpuload(const int cpu)
-{
-	return cpu_rq(cpu)->load.weight;
-}
-
 static inline void __set_task_cpu(struct task_struct *p, unsigned int cpu)
 {
 	set_task_rq(p, cpu);
@@ -1671,6 +1665,12 @@
 
 #ifdef CONFIG_SMP
 
+/* Used instead of source_load when we know the type == 0 */
+static unsigned long weighted_cpuload(const int cpu)
+{
+	return cpu_rq(cpu)->load.weight;
+}
+
 /*
  * Is this task likely cache-hot:
  */