ASoC: Intel: kbl_rt5663_rt5514_max98927: rename shadowed variable

Fix cppcheck warning:

[sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c:293] ->
[sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c:336]: (style)
Local variable 'channels' shadows outer variable
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200113210428.27457-12-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c

@@ -333,7 +333,7 @@ static int kabylake_ssp_fixup(struct snd_soc_pcm_runtime *rtd,
 {
 	struct snd_interval *rate = hw_param_interval(params,
 			SNDRV_PCM_HW_PARAM_RATE);
-	struct snd_interval *channels = hw_param_interval(params,
+	struct snd_interval *chan = hw_param_interval(params,
 			SNDRV_PCM_HW_PARAM_CHANNELS);
 	struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
 	struct snd_soc_dpcm *dpcm = container_of(
@@ -348,15 +348,15 @@ static int kabylake_ssp_fixup(struct snd_soc_pcm_runtime *rtd,
 	    !strcmp(fe_dai_link->name, "Kbl Audio Headset Playback") ||
 	    !strcmp(fe_dai_link->name, "Kbl Audio Capture Port")) {
 		rate->min = rate->max = 48000;
-		channels->min = channels->max = 2;
+		chan->min = chan->max = 2;
 		snd_mask_none(fmt);
 		snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE);
 	} else if (!strcmp(fe_dai_link->name, "Kbl Audio DMIC cap")) {
 		if (params_channels(params) == 2 ||
 				DMIC_CH(dmic_constraints) == 2)
-			channels->min = channels->max = 2;
+			chan->min = chan->max = 2;
 		else
-			channels->min = channels->max = 4;
+			chan->min = chan->max = 4;
 	}
 	/*
 	 * The speaker on the SSP0 supports S16_LE and not S24_LE.