ASoC: rt5651: fix boolean assignments

Reported by Coccinelle:
sound/soc/codecs/rt5651.c:750:2-17: WARNING: Assignment of bool to 0/1
sound/soc/codecs/rt5651.c:754:2-17: WARNING: Assignment of bool to 0/1
sound/soc/codecs/rt5651.c:2192:1-16: WARNING: Assignment of bool to 0/1

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/codecs/rt5651.c b/sound/soc/codecs/rt5651.c
index b7ba643..3882e23 100644
--- a/sound/soc/codecs/rt5651.c
+++ b/sound/soc/codecs/rt5651.c
@@ -747,11 +747,11 @@
 			RT5651_HP_CP_PD | RT5651_HP_SG_EN);
 		regmap_update_bits(rt5651->regmap, RT5651_PR_BASE +
 			RT5651_CHPUMP_INT_REG1, 0x0700, 0x0400);
-		rt5651->hp_mute = 0;
+		rt5651->hp_mute = false;
 		break;
 
 	case SND_SOC_DAPM_PRE_PMD:
-		rt5651->hp_mute = 1;
+		rt5651->hp_mute = true;
 		usleep_range(70000, 75000);
 		break;
 
@@ -2189,7 +2189,7 @@
 		dev_warn(&i2c->dev, "Failed to apply regmap patch: %d\n", ret);
 
 	rt5651->irq = i2c->irq;
-	rt5651->hp_mute = 1;
+	rt5651->hp_mute = true;
 
 	INIT_DELAYED_WORK(&rt5651->bp_work, rt5651_button_press_work);
 	INIT_WORK(&rt5651->jack_detect_work, rt5651_jack_detect_work);