ASoC: wm_adsp: Fix type warning in sprintf

The shift member of struct soc_mixer_control is unsigned int.
Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/wm_adsp.c

@@ -2654,7 +2654,7 @@ int wm_adsp2_preloader_put(struct snd_kcontrol *kcontrol,
 		(struct soc_mixer_control *)kcontrol->private_value;
 	char preload[32];
 
-	snprintf(preload, ARRAY_SIZE(preload), "DSP%d Preload", mc->shift);
+	snprintf(preload, ARRAY_SIZE(preload), "DSP%u Preload", mc->shift);
 
 	dsp->preloaded = ucontrol->value.integer.value[0];