ASoC: mediatek: mt8173: rename local irq variable

ASoC: mediatek: mt8173: rename local irq variable

cppcheck warning:

sound/soc/mediatek/mt8173/mt8173-afe-pcm.c:929:28: style: Local
variable 'irq' shadows outer argument [shadowArgument]
  struct mtk_base_afe_irq *irq;
                           ^
sound/soc/mediatek/mt8173/mt8173-afe-pcm.c:914:47: note: Shadowed
declaration
static irqreturn_t mt8173_afe_irq_handler(int irq, void *dev_id)
                                              ^
sound/soc/mediatek/mt8173/mt8173-afe-pcm.c:929:28: note: Shadow
variable
  struct mtk_base_afe_irq *irq;
                           ^

Not a great idea to have two 'irq' variables in the same function...

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210311004904.121205-5-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>