ASoC: simple-scu-card: Add pm callbacks to platform driver

Set snd_soc_pm_ops for the pm ops to make sure that the ASoC level of PM
operations are going to happen. This is needed to get suspend/resume
working correctly when the audio is using simple-scu-card.
Reported-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/generic/simple-scu-card.c

@@ -300,6 +300,7 @@ MODULE_DEVICE_TABLE(of, asoc_simple_of_match);
 static struct platform_driver asoc_simple_card = {
 	.driver = {
 		.name = "simple-scu-audio-card",
+		.pm = &snd_soc_pm_ops,
 		.of_match_table = asoc_simple_of_match,
 	},
 	.probe = asoc_simple_card_probe,