hwc2: Update secure display layer on active built in display

1. Add support to handle secure display layer on secondary display
2. Update secure display layer on active builtin display.
3. Add display config API to get the display attributes of the active
   builtin display.

Change-Id: Ia70dff316265c9364b060fe4fae591a9599e16e9
CRs-Fixed: 2375587
7 files changed