ARM: mvebu: mark armada_370_xp_pmsu_idle_prepare() as static

The armada_370_xp_pmsu_idle_prepare() function is only used internally
to pmsu.c, so there's no reason to not use the static qualifier.
Signed-off-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1401116474-31221-1-git-send-email-thomas.petazzoni@free-electrons.comAcked-by: NGregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

arch/arm/mach-mvebu/pmsu.c

@@ -148,7 +148,7 @@ static void armada_370_xp_cpu_resume(void)
 }
 
 /* No locking is needed because we only access per-CPU registers */
-void armada_370_xp_pmsu_idle_prepare(bool deepidle)
+static void armada_370_xp_pmsu_idle_prepare(bool deepidle)
 {
 	unsigned int hw_cpu = cpu_logical_map(smp_processor_id());
 	u32 reg;