Set connection state for headphones on boot The bootanimation sound plays out...

Set connection state for headphones on boot The bootanimation sound plays out after audio service starts up.

Summary: Set connection state for headphones on boot
The bootanimation sound plays out after audio service starts up.
Since the framework controls the routing state at this time, check and
set the headphone connection when WiredAccessoryManager starts up. This
allows the boot animation sound to play out from the right output
device.

Test Plan: Successful build

Change-Id: I374b220b7c22311120759daafb898b2c9ff86dee