sound: usb: Map audio format received from QMI client

Audio format received from QMI client are not one to one
mapped to pcm format defined by ALSA driver. This causes
format mismatch when QMI client request a format not
defined by ALSA driver. Fix this by creating a mapping
between two formats.

Change-Id: I0f08dd57fa39d385369ef4886d12e8ea77c6ebc0
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>