Moves the framebuffer to the shared memory regions

- Eliminates all references to the previous file-based framebuffer

Bug: 70944937
Test: local
Change-Id: I5815a466c76cf545752648a41653269b3f991cab
(cherry picked from commit e771739caf1a8d42d2603832b53cbae013a55f0c)
6 files changed