bfin: Fix typo in arch_cpu_idle()

Introduced by commit 25d67f8 ("bfin: Use generic idle loop").

Cc: Thomas Gleixner <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Rusty Russell <[email protected]>
Cc: Paul McKenney <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Cc: Srivatsa S. Bhat <[email protected]>
Cc: Magnus Damm <[email protected]>
Cc: Mike Frysinger <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>

Author: Ingo Molnar

arch/blackfin/kernel/process.c

@@ -65,7 +65,7 @@ void arch_cpu_idle(void)
 	hard_local_irq_enable();
 }
 
-#ufdef CONFIG_HOTPLUG_CPU
+#ifdef CONFIG_HOTPLUG_CPU
 void arch_cpu_idle_dead(void)
 {
 	cpu_die();