ALSA: hda - Allow power_save_controller option override DCAPS

Change the power_save_controller option to bint from bool so that user
can override the runtime PM capability bit and force to enable or
disable the runtime PM.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/hda_intel.c

@@ -134,8 +134,8 @@ MODULE_PARM_DESC(power_save, "Automatic power-saving timeout "
  * this may give more power-saving, but will take longer time to
  * wake up.
  */
-static bool power_save_controller = 1;
-module_param(power_save_controller, bool, 0644);
+static int power_save_controller = -1;
+module_param(power_save_controller, bint, 0644);
 MODULE_PARM_DESC(power_save_controller, "Reset controller in power save mode.");
 #endif /* CONFIG_PM */
 
@@ -2711,6 +2711,8 @@ static int azx_runtime_idle(struct device *dev)
 	struct snd_card *card = dev_get_drvdata(dev);
 	struct azx *chip = card->private_data;
 
+	if (power_save_controller > 0)
+		return 0;
 	if (!power_save_controller ||
 	    !(chip->driver_caps & AZX_DCAPS_PM_RUNTIME))
 		return -EBUSY;