ASoC: codecs: pcm3168a: Prevent regulator double-disable in S4

The SLEEP_PM_OPS are unset for the driver. Hibernation (S4) causes no
resume (skipped thanks to smart_suspend=true) yet still performs the
suspend sequence unconditionally, see device_complete() in
drivers/base/power/main.c.

If S4 runs for already suspended pcm3168a device, we end up with
"unbalanced disables" warning from the regulators. Assigning the
operations fixes the problem.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://patch.msgid.link/20260525201801.1336936-2-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: crojewsk-intel

sound/soc/codecs/pcm3168a.c

@@ -907,6 +907,7 @@ static int pcm3168a_rt_suspend(struct device *dev)
 
 EXPORT_GPL_DEV_PM_OPS(pcm3168a_pm_ops) = {
 	RUNTIME_PM_OPS(pcm3168a_rt_suspend, pcm3168a_rt_resume, NULL)
+	SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume)
 };
 
 MODULE_DESCRIPTION("PCM3168A codec driver");