ASoC: fsi: constify dev_pm_ops structure

This dev_pm_ops structure is only stored in the pm field of a
device_driver structure. This field is declared const, so
dev_pm_ops structures that have this property can be declared
as const also.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sh/fsi.c

@@ -2109,7 +2109,7 @@ static int fsi_resume(struct device *dev)
 	return 0;
 }
 
-static struct dev_pm_ops fsi_pm_ops = {
+static const struct dev_pm_ops fsi_pm_ops = {
 	.suspend		= fsi_suspend,
 	.resume			= fsi_resume,
 };