mfd: twl4030-audio: Get audio MCLK via twl-core API instead of pdata

twl-core has API to get the boot time configured HFCLK rate which has the
same rate as the audio MCLK.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/mfd/twl4030-audio.c b/drivers/mfd/twl4030-audio.c
index 42e69ae..31605fa 100644
--- a/drivers/mfd/twl4030-audio.c
+++ b/drivers/mfd/twl4030-audio.c
@@ -175,7 +175,7 @@
 		return -ENOMEM;
 
 	mutex_init(&audio->mutex);
-	audio->audio_mclk = pdata->audio_mclk;
+	audio->audio_mclk = twl_get_hfclk_rate();
 
 	/* Configure APLL_INFREQ and disable APLL if enabled */
 	switch (audio->audio_mclk) {