ASoC: qcom: qdsp6: q6asm: Provide documentation for 'codec_profile'

ASoC: qcom: qdsp6: q6asm: Provide documentation for 'codec_profile'

Fixes the following W=1 kernel build warning(s):

sound/soc/qcom/qdsp6/q6asm.c:924: warning: Function parameter or
member 'codec_profile' not described in 'q6asm_open_write'

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc: Patrick Lai <plai@codeaurora.org>
Cc: Banajit Goswami <bgoswami@codeaurora.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20200709162328.259586-3-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>