ARM: highbank: call highbank_pm_init from .init_machine

Being a module_init call, highbank_pm_init will cause problem with
multi-platform build running on other platforms.  Call it from
.init_machine instead.

Reported-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
diff --git a/arch/arm/mach-highbank/pm.c b/arch/arm/mach-highbank/pm.c
index 33b3beb..de866f2 100644
--- a/arch/arm/mach-highbank/pm.c
+++ b/arch/arm/mach-highbank/pm.c
@@ -47,9 +47,7 @@
 	.valid = suspend_valid_only_mem,
 };
 
-static int __init highbank_pm_init(void)
+void __init highbank_pm_init(void)
 {
 	suspend_set_ops(&highbank_pm_ops);
-	return 0;
 }
-module_init(highbank_pm_init);