ASoC: msm: Condition change to feed buffer on resume

Feed data to the DSP on a CMD_RUN ack by looking at the number
of bytes sent to the DSP and not the number of bytes consumed

Change-Id: I45a670d244e20dd1f444a92b86737b7541a7ccf0
Signed-off-by: Haynes Mathew George <hgeorge@codeaurora.org>