drm/radeon/kms: connector fixes

- Don't add dac load detection property to DVI-D
- Make sure i2c info is valid before adding DP aux chan bus
- Don't create scaling_mode_property twice
- fix typo that prevented coherent and load detection from working
- add coherent prop to DP (for dp->dvi adapters)

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index c115f2e..f099ce2 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -660,7 +660,7 @@
 			return -ENOMEM;
 
 		rdev->mode_info.coherent_mode_property->values[0] = 0;
-		rdev->mode_info.coherent_mode_property->values[0] = 1;
+		rdev->mode_info.coherent_mode_property->values[1] = 1;
 	}
 
 	if (!ASIC_IS_AVIVO(rdev)) {
@@ -684,7 +684,7 @@
 	if (!rdev->mode_info.load_detect_property)
 		return -ENOMEM;
 	rdev->mode_info.load_detect_property->values[0] = 0;
-	rdev->mode_info.load_detect_property->values[0] = 1;
+	rdev->mode_info.load_detect_property->values[1] = 1;
 
 	drm_mode_create_scaling_mode_property(rdev->ddev);