arm: mx6: novena: Add proper LVDS display support

Repair the register configuration and add proper support for the
display attached to both LVDS channels.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Sean Cross <xobs@kosagi.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Tim Harvey <tharvey@gateworks.com>
diff --git a/board/kosagi/novena/novena.c b/board/kosagi/novena/novena.c
index e7a6adb..69f5be3 100644
--- a/board/kosagi/novena/novena.c
+++ b/board/kosagi/novena/novena.c
@@ -173,6 +173,14 @@
 	return 0;
 }
 
+int board_late_init(void)
+{
+#if defined(CONFIG_VIDEO_IPUV3)
+	setup_display_lvds();
+#endif
+	return 0;
+}
+
 int checkboard(void)
 {
 	puts("Board: Novena 4x\n");