ASoC: Intel: bytcr_rt5640: align quirk override handling

As discussed on alsa-devel, a zero value is useful to get rid of all
quirks. Set default to -1 and align types as done in other machine
drivers.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/boards/bytcr_rt5640.c

@@ -98,8 +98,8 @@ struct byt_rt5640_private {
 static bool is_bytcr;
 
 static unsigned long byt_rt5640_quirk = BYT_RT5640_MCLK_EN;
-static unsigned int quirk_override;
-module_param_named(quirk, quirk_override, uint, 0444);
+static int quirk_override = -1;
+module_param_named(quirk, quirk_override, int, 0444);
 MODULE_PARM_DESC(quirk, "Board-specific quirk override");
 
 static void log_quirks(struct device *dev)
@@ -1254,7 +1254,7 @@ static int snd_byt_rt5640_mc_probe(struct platform_device *pdev)
 	dmi_id = dmi_first_match(byt_rt5640_quirk_table);
 	if (dmi_id)
 		byt_rt5640_quirk = (unsigned long)dmi_id->driver_data;
-	if (quirk_override) {
+	if (quirk_override != -1) {
 		dev_info(&pdev->dev, "Overriding quirk 0x%x => 0x%x\n",
 			 (unsigned int)byt_rt5640_quirk, quirk_override);
 		byt_rt5640_quirk = quirk_override;