DisplayContent rotateBounds not keeping same physical position for 180

Rotation_90 + rotation_90 is different from the result of rotation_180
with the current implementation. Should also take care of rotation_180.

Fix: 180751251
Bug: 173124775
Test: atest WmTests:DisplayContentTests
Test: atest WMShellUnitTests:DisplayLayoutTest
Test: atest FrameworksCoreTests:RotationUtilsTest
Change-Id: Ia1c87409b4c4cc412c3fd89e58d08b6ae2069fd0