ASoC: fsl: pcm030-audio-fabric: use platform_device_unregsiter()

Replace platform_device_del/put() with platform_device_unregsiter()
to simplify code.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220704075134.26230-1-yangyingliang@huawei.com


Signed-off-by: Mark Brown <broonie@kernel.org>