Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|--- a/sys/dev/drm/radeon/rs780_dpm.c
|+++ b/sys/dev/drm/radeon/rs780_dpm.c
--------------------------
Patching file rs780_dpm.c using Plan A...
Hunk #1 succeeded at 600.
Hunk #2 succeeded at 791.
Hunk #3 succeeded at 810.
Hunk #4 succeeded at 823.
Hunk #5 succeeded at 874.
Hunk #6 succeeded at 893.
Hunk #7 succeeded at 989.
done