Change audio routing policy for HDMI

HDMI device should have a higher priority than analog dock audio but a lower priority
than wired headsets.
Also modified AudioService so that HDMI is mapped to DEVICE_OUT_AUX_DIGITAL device and not
DEVICE_OUT_DGTL_DOCK_HEADSET as before to enable discrimination between SPDIF going to
digital dock and SPIDF going to HDMI.

Change-Id: I887d0c73479784dd2edaf41ce1a7d8d0bdcbb4bd
1 file changed
tree: b64cef369c553e79b0ce9f4b74485aed40fd9e53
  1. camera/
  2. cmds/
  3. drm/
  4. include/
  5. media/
  6. services/