soundwire: qcom: add in-band wake up interrupt support

Some of the Qualcomm SoundWire Controller instances like the ones that are
connected to RX path along with Headset connections support Waking up
Controller from Low power clock stop state using SoundWire In-band interrupt.
SoundWire Slave on the bus would initiate this by pulling the data line high,
while the clock is stopped.

Add support to this wake up interrupt.

Signed-off-by: Srinivas Kandagatla <[email protected]>
Reviewed-by: Pierre-Louis Bossart <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

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