sparc64: Add missing notify_cpu_starting() call.

Commit e545a614 ("kernel/cpu.c: create
a CPU_STARTING cpu_chain notifier") added a notify_cpu_starting()
notifier event, and hit every arch except sparc64.

Fix that missed case.
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc64/kernel/smp.c

@@ -21,6 +21,7 @@
 #include <linux/jiffies.h>
 #include <linux/profile.h>
 #include <linux/lmb.h>
+#include <linux/cpu.h>
 
 #include <asm/head.h>
 #include <asm/ptrace.h>
@@ -115,6 +116,9 @@ void __cpuinit smp_callin(void)
 	atomic_inc(&init_mm.mm_count);
 	current->active_mm = &init_mm;
 
+	/* inform the notifiers about the new cpu */
+	notify_cpu_starting(cpuid);
+
 	while (!cpu_isset(cpuid, smp_commenced_mask))
 		rmb();