drm/msm/dsi: Refer to connected device as 'device' instead of 'panel'

We currently support only panels connected to dsi output. We're going to
also support external bridge chips now.

Change 'panel_node' to 'device_node' in the struct msm_dsi_host and
'panel_flags' to 'device_flags' in msm_dsi. This makes things sound a
bit more generic.

Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c
index 3d6ae79..5c8fbc4 100644
--- a/drivers/gpu/drm/msm/dsi/dsi.c
+++ b/drivers/gpu/drm/msm/dsi/dsi.c
@@ -18,7 +18,7 @@
 	if (!msm_dsi || !msm_dsi->panel)
 		return NULL;
 
-	return (msm_dsi->panel_flags & MIPI_DSI_MODE_VIDEO) ?
+	return (msm_dsi->device_flags & MIPI_DSI_MODE_VIDEO) ?
 		msm_dsi->encoders[MSM_DSI_VIDEO_ENCODER_ID] :
 		msm_dsi->encoders[MSM_DSI_CMD_ENCODER_ID];
 }