CHROMIUM: ALSA: hda - Hack in a delay when turning codec on.

CHROMIUM: ALSA: hda - Hack in a delay when turning codec on.

Add a 10msec delay before and after powering on the codec.  It might
make link more likely to produce audio.

BUG=chrome-os-partner:17393
TEST=modified loopback test for 20 hours without losing audio.

Change-Id: I62822ae47b8a538c9537be42f8d6b3f3852dbb11
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/43162
Commit-Queue: Trond Wuellner <trond@chromium.org>
Commit-Queue: Puneet Kumar <puneetster@chromium.org>
Reviewed-by: Puneet Kumar <puneetster@chromium.org>