Use rotation hint to update layout

The info from DisplayController is the rotation of display.
While the rotation hint is from the current configuration of
the activity. Because system supports to display activities
with individual rotation at the same time, it is more accurate
to use the hint for layout.

Because there are 4 DeviceProfile instances for 4 rotations.
The instance will be used for corresponding rotation. So the seascape
attributes is a final state which no longer needs to be updated.

Bug: 356164050
Flag: EXEMPT bugfix
Test: Enable auto rotation. Enable home rotation.
      Launch a fixed portrait activity.
      Rotate device to 270 degree (seascape).
      Swipe navigation to return to home.
      Home should use 270 layout directly instead of 90
      and then change to 270 after animation is finished.

Change-Id: Iad0f6ada0ec1cb7f0b5281b508d58276332076fb