drm/radeon/kms: quirk for Gigabyte RV515 card, DVI+VGA not 2xDVI.

Similiar to other quirks for RV515, this card has no second DVI port.

Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 0802b30..5e41410 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -143,6 +143,15 @@
 			return false;
 	}
 
+	/* Gigabyte X1300 is DVI+VGA, not DVI+DVI */
+	if ((dev->pdev->device == 0x7142) &&
+	    (dev->pdev->subsystem_vendor == 0x1458) &&
+	    (dev->pdev->subsystem_device == 0x2134)) {
+		if (supported_device == ATOM_DEVICE_DFP1_SUPPORT)
+			return false;
+	}
+
+
 	/* Funky macbooks */
 	if ((dev->pdev->device == 0x71C5) &&
 	    (dev->pdev->subsystem_vendor == 0x106b) &&