hal: Fix digital USB headset combo device

 * Digital USB output was not handled in this case. Add it.

Change-Id: I8e984a2cf545dabdc6dc538b75e8ca7221fb6688
audio: msm8660: add presto audio.

Import audio from presto repo, because the local module don't build.

Change-Id: I58418fd4a5aa39302e24a78cb35be76f7902801c
presto: audio: fix error

Change-Id: I6ecf222eeb42efcba45bb2639f0d97b7706fd188
presto: audio: define PRESTO_AUDIO

Change-Id: Ie801771f7409dfb4215c99656482623c6e419c0e
Revert "presto: audio: define PRESTO_AUDIO"

This reverts commit f16f3eca14407c6f4b3987b6d9b3717df8894f17.

Change-Id: Ic091b85c661cb64ddef887131a8cde1e5a076801