MIPS: Idle: Make call of function pointer readable.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/kernel/idle.c b/arch/mips/kernel/idle.c
index b33875b..36e79f5 100644
--- a/arch/mips/kernel/idle.c
+++ b/arch/mips/kernel/idle.c
@@ -234,7 +234,7 @@
 {
 	smtc_idle_hook();
 	if (cpu_wait)
-		(*cpu_wait)();
+		cpu_wait();
 	else
 		local_irq_enable();
 }