DockAudio: Route audio via dock for Samsung devices

This patch simply removes the audio routing checks for Samsung
devices and routes audio via the dock when the mobile is docked.

There is no option to disable audio routing out through the dock

Change-Id: Ie3f99101b051326913d06f1c78894d50035f6e62
Merge "DockAudio: Route audio via dock for Samsung devices" into jb43