[radeonsi KMS] Monitors on DP outputs not enabled

Submitted by Ralf-Peter Rohbeck

Assigned to Default DRI bug account

Link to original bug (#83742)

Description

I've been running with 4 monitors on my 7850 for a long time but after a Debian jessie upgrade the two monitors on the DP outputs are no longer enabled.

Please see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=760881