For MST we need to be able to pick front end encoders
separate from backend, but only for MST, so we need to
make the encoder picking interface smarter.
v2: agd5f: squash in:
drm/radeon: release digital encoder before asking for new one Reported-by: Dieter Nützel <Dieter@nuetzel-hh.de> Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>