ASoC: atmel: mchp-pdmc: Remove unnecessary print function dev_err()

The print function dev_err() is redundant because
platform_get_irq() already prints an error.

Eliminate the follow coccicheck warning:

./sound/soc/atmel/mchp-pdmc.c:991:2-9: line 991 is redundant because
platform_get_irq() already prints an error.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Reviewed-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Link: https://lore.kernel.org/r/20220310082756.1183-1-jiapeng.chong@linux.alibaba.com
Signed-off-by: Mark Brown <broonie@kernel.org>