audio: mute/unmute HDMI audio earlier

select_devices() will return early if the output
device hasn't changed, and since HDMI is seen as
OUT_DEVICE_NONE (because it requires no mixer
routing), it will not be unmuted.

Bug: 7208242
Change-Id: I23e4ad85a904537bffd7a9ed87d4e80e2c204308
1 file changed