libdrmutils: Add support for RMFB2

Add support for RMFB2 if available. Original RMFB bypasses refcounting
in kernel and removes planes, crtcs etc associated with the FB Id.
RMFB2 has proper refcounting and allows buffer removal to be
independent of drawing thread in client

Change-Id: I4f2c9dc509844467f39be067697a46d1beeeaff7
CRs-fixed: 1114808
2 files changed