This reverts commit 
7fe04d6fa824ccea704535a597dc417c8687f990.
Fixes some systems at the expense of others.  Need to properly
fix the pll divider selection.
bug:
https://bugzilla.kernel.org/show_bug.cgi?id=99651
Cc: stable@vger.kernel.org
                else
                        radeon_crtc->pll_flags |= RADEON_PLL_PREFER_LOW_REF_DIV;
 
-               /* if there is no audio, set MINM_OVER_MAXP  */
-               if (!drm_detect_monitor_audio(radeon_connector_edid(connector)))
-                       radeon_crtc->pll_flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP;
                if (rdev->family < CHIP_RV770)
                        radeon_crtc->pll_flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP;
                /* use frac fb div on APUs */