sensorservice: add fusion sensors if all events are supported

- Fusion sensors depend on gyro, mag field, and accelerometer
  events in order to emulate these sensors.  Don't create
  them unless ALL of the real hardware devices required exist.

Change-Id: I1bce167a52c2dfc56a07450f858b01b78c39b7fe
Binder: Resolve race condition

The transaction buffer does not be freed before sendReply,
which may result in the next command fails. e.g. If one
application immediately creates another player to play next
video clip after releases the previous one, the setup may
fail for the native player does not be freed and the surface
is still connected to the previous one.

Change-Id: Id4ce215e5558edeb7468c8b08ec939f578beb184
Signed-off-by: Yiming Cao <ym.caoyiming@gmail.com>
Add hdpi-2048 tunings

Change-Id: I65348d7e5dff26858168fae671d7337a887575da