ASoC: omap-dmic: Add pm_qos handling to avoid overruns with CPU_IDLE

[ Upstream commit ffdcc3638c58d55a6fa68b6e5dfd4fb4109652eb ]

We need to block sleep states which would require longer time to leave than
the time the DMA must react to the DMA request in order to keep the FIFO
serviced without overrun.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>