drm/sun4i: tcon: Support LVDS on the A33

The A33 TCON supports LVDS, so we can toggle the support switch.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200214120934.107924-1-maxime@cerno.tech

drivers/gpu/drm/sun4i/sun4i_tcon.c

@@ -1501,6 +1501,7 @@ static const struct sun4i_tcon_quirks sun8i_a33_quirks = {
 	.has_lvds_alt		= true,
 	.dclk_min_div		= 1,
 	.setup_lvds_phy		= sun6i_tcon_setup_lvds_phy,
+	.supports_lvds		= true,
 };
 
 static const struct sun4i_tcon_quirks sun8i_a83t_lcd_quirks = {