ASoC: WM8962 accessory detection requires MICBIAS

Force MICBIAS on as well as SYSCLK as the WM8962 accessory detection can't
function without both. No point in making machine drivers manually enable
it.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c
index 430bf53..b9c64a8 100644
--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -3661,8 +3661,10 @@
 	snd_soc_jack_report(wm8962->jack, 0,
 			    SND_JACK_MICROPHONE | SND_JACK_BTN_0);
 
-	if (jack)
+	if (jack) {
 		snd_soc_dapm_force_enable_pin(&codec->dapm, "SYSCLK");
+		snd_soc_dapm_force_enable_pin(&codec->dapm, "MICBIAS");
+	}
 
 	return 0;
 }