ASoC: soc-pcm: remove snd_soc_dpcm_stream_lock_irqsave_nested()

soc-pcm.c has snd_soc_dpcm_stream_lock_irqsave_nested() /
snd_soc_dpcm_stream_unlock_irqrestore()  helper function,
but it is almost nothing help. It just makes a code complex.
Let's remove it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/87msl6aa2c.wl-kuninori.morimoto.gx@renesas.com


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