drm/radeon: dp only enable enhanced framing if sink supports.

DisplayPort spec v1.1a, Table 2-52.

Same commit to Intel by ajax in 9962c9252e

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2012-03-18 10:10:50 +00:00
commit abc8113fe5