msm: qdsp5: Increase buffersize of hostPCM interface.

The default audio sample rate of audioflinger is increased
from 44.1k to 48k.Increase the buffersize to take
advantage of that.

Signed-off-by: Sidipotu Ashok <sashok@codeaurora.org>
(cherry picked from commit be85d1e9676d95489586e035ed3d6abc81157337)

Change-Id: I0ed4ad8e5e158d90b456171bbfeeb5e2e2807b8f
Signed-off-by: Gopal G Goberu <ggober@codeaurora.org>