When using DT, dss device does not have platform data. However,
dss_get_ctx_loss_count() uses dss device's platform data to find the
get_ctx_loss_count function pointer.
To fix this, dss_get_ctx_loss_count() needs to be changed to get the
platform data from the omapdss device, which is a "virtual" device and
always has platform data.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
 
 int dss_get_ctx_loss_count(void)
 {
-       struct omap_dss_board_info *board_data = dss.pdev->dev.platform_data;
+       struct platform_device *core_pdev = dss_get_core_pdev();
+       struct omap_dss_board_info *board_data = core_pdev->dev.platform_data;
        int cnt;
 
        if (!board_data->get_context_loss_count)