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For debug purposes add an entry in debugfs to dump Qualcomm
SoundWire Controller registers.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210907105636.3171-1-srinivas.kandagatla@linaro.org

Signed-off-by: Vinod Koul <vkoul@kernel.org>