mfd: arizona: Clarify mixer underclocking error

If the mixer is underclocked it will drop a sample so log that error
more directly.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

drivers/mfd/arizona-core.c

@@ -115,7 +115,7 @@ static irqreturn_t arizona_underclocked(int irq, void *data)
 	if (val & ARIZONA_ADC_UNDERCLOCKED_STS)
 		dev_err(arizona->dev, "ADC underclocked\n");
 	if (val & ARIZONA_MIXER_UNDERCLOCKED_STS)
-		dev_err(arizona->dev, "Mixer underclocked\n");
+		dev_err(arizona->dev, "Mixer dropped sample\n");
 
 	return IRQ_HANDLED;
 }