OMAPDSS: features: fix OMAP5 features

OMAP5 has LCD3 overlay manager, and total 4 overlay managers. These are
not correctly defined in the dss features. Fix them.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/video/fbdev/omap2/dss/dss_features.c

@@ -638,6 +638,7 @@ static const enum dss_feat_id omap4_dss_feat_list[] = {
 
 static const enum dss_feat_id omap5_dss_feat_list[] = {
 	FEAT_MGR_LCD2,
+	FEAT_MGR_LCD3,
 	FEAT_CORE_CLK_DIV,
 	FEAT_LCD_CLK_SRC,
 	FEAT_DSI_DCS_CMD_CONFIG_VC,
@@ -840,7 +841,7 @@ static const struct omap_dss_features omap5_dss_features = {
 	.features = omap5_dss_feat_list,
 	.num_features = ARRAY_SIZE(omap5_dss_feat_list),
 
-	.num_mgrs = 3,
+	.num_mgrs = 4,
 	.num_ovls = 4,
 	.supported_displays = omap5_dss_supported_displays,
 	.supported_outputs = omap5_dss_supported_outputs,