drm/radeon/kms: more r4xx lvds fixes

Grab pll ref div from regs at driver init.  r4xx seems very
picky about the dividers for the pll driving lvds.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_legacy_crtc.c b/drivers/gpu/drm/radeon/radeon_legacy_crtc.c
index 1058ed0..b82ede9 100644
--- a/drivers/gpu/drm/radeon/radeon_legacy_crtc.c
+++ b/drivers/gpu/drm/radeon/radeon_legacy_crtc.c
@@ -819,8 +819,8 @@
 							use_bios_divs = true;
 						}
 					}
-					pll_flags |= RADEON_PLL_USE_REF_DIV;
 				}
+				pll_flags |= RADEON_PLL_USE_REF_DIV;
 			}
 		}
 	}