ASoC: msm: Update the name for pcm platform driver.

Update the name of pcm platform driver to match with device tree
node.

Change-Id: I37063c7b6aa2a04b31f86754b24f9aa046d4c4a9
Signed-off-by: Krishnankutty Kolathappilly <kkolat@codeaurora.org>
Signed-off-by: flar2 <asegaert@gmail.com>