ARM: mxs: constify platform_suspend_ops

platform_suspend_ops are not supposed to change at runtime.
Functions suspend_set_ops working with const platform_suspend_ops.
So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <[e-mail]>
Signed-off-by: Shawn Guo <[e-mail]>

arch/arm/mach-mxs/pm.c

···
 	return 0;
 }
 
-static struct platform_suspend_ops mxs_suspend_ops = {
+static const struct platform_suspend_ops mxs_suspend_ops = {
 	.enter = mxs_suspend_enter,
 	.valid = suspend_valid_only_mem,
 };