drm/sun4i: dsi: Remove unused drv from driver context

This member is never used, so remove it.

Fixes: 133add5b ("drm/sun4i: Add Allwinner A31 MIPI-DSI controller support")
Signed-off-by: NSamuel Holland <samuel@sholland.org>
Signed-off-by: NMaxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20200211072858.30784-1-samuel@sholland.org

drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c

@@ -27,7 +27,6 @@
 #include <drm/drm_probe_helper.h>
 
 #include "sun4i_crtc.h"
-#include "sun4i_drv.h"
 #include "sun4i_tcon.h"
 #include "sun6i_mipi_dsi.h"
 
@@ -1022,15 +1021,12 @@ static int sun6i_dsi_bind(struct device *dev, struct device *master,
 			 void *data)
 {
 	struct drm_device *drm = data;
-	struct sun4i_drv *drv = drm->dev_private;
 	struct sun6i_dsi *dsi = dev_get_drvdata(dev);
 	int ret;
 
 	if (!dsi->panel)
 		return -EPROBE_DEFER;
 
-	dsi->drv = drv;
-
 	drm_encoder_helper_add(&dsi->encoder,
 			       &sun6i_dsi_enc_helper_funcs);
 	ret = drm_encoder_init(drm,

drivers/gpu/drm/sun4i/sun6i_mipi_dsi.h

@@ -28,7 +28,6 @@ struct sun6i_dsi {
 	struct phy		*dphy;
 
 	struct device		*dev;
-	struct sun4i_drv	*drv;
 	struct mipi_dsi_device	*device;
 	struct drm_panel	*panel;
 };