hal: add sidetone support for USB

if usb device provides sidetone contols
- disable sidetone when usb is detected
- enable side tone only for calls.

Bug: 37404459
Test: made voice call, confirmed sidetone. Following call,
music capture and playback does not have sidetone present.

Change-Id: If2e4926f50aaaae07ea72fd5528ab0cd6658d8ab
Signed-off-by: Andrew Chant <achant@google.com>