WM: Handle primary display orientation when calculating the transform hint

Query the surface flinger property
ro.surface_flinger.primary_display_orientation to determine the
primary display's install orientation. If the window is on the
primary display, then update the transform hint passed on to the
client.

Bug: 196167822
Test: check initial buffer transforms on displays with a different
install orientation

Change-Id: Idf010cd6be73172ba708820f87046c3ba3cf8001
Merged-In: Idf010cd6be73172ba708820f87046c3ba3cf8001