Bugfix: Dock events can have state greater than 1

On Samsung devices the USB audio is being routed for every dock event
It is ignoring the checkbox (in advanced settings) to not route audio

This bug was introduced with this patch
http://review.cyanogenmod.com/#/c/24830/

The state of an event can be 2 or 4 depending on the dock type

This patch switches for looking for state > 0 rather than  state ==1

Change-Id: I978d18ec36e74e821a6d300136377158901cdf50