drm/mediatek: mtk_dpi: Rename bridge to next_bridge

This is really a cosmetic change just to make a bit more readable the
code after convert the driver to drm_bridge. The bridge variable name
will be used by the encoder drm_bridge, and the chained bridge will be
named next_bridge.

Signed-off-by: Enric Balletbo i Serra <[e-mail]>
Signed-off-by: Chun-Kuang Hu <[e-mail]>

drivers/gpu/drm/mediatek/mtk_dpi.c

···
 struct mtk_dpi {
 	struct mtk_ddp_comp ddp_comp;
 	struct drm_encoder encoder;
-	struct drm_bridge *bridge;
+	struct drm_bridge *next_bridge;
 	void __iomem *regs;
 	struct device *dev;
 	struct clk *engine_clk;
···
 
 	dpi->encoder.possible_crtcs = mtk_drm_find_possible_crtc_by_comp(drm_dev, dpi->ddp_comp);
 
-	ret = drm_bridge_attach(&dpi->encoder, dpi->bridge, NULL, 0);
+	ret = drm_bridge_attach(&dpi->encoder, dpi->next_bridge, NULL, 0);
 	if (ret) {
 		dev_err(dev, "Failed to attach bridge: %d\n", ret);
 		goto err_cleanup;
···
 	}
 
 	ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0,
-					  NULL, &dpi->bridge);
+					  NULL, &dpi->next_bridge);
 	if (ret)
 		return ret;
 
-	dev_info(dev, "Found bridge node: %pOF\n", dpi->bridge->of_node);
+	dev_info(dev, "Found bridge node: %pOF\n", dpi->next_bridge->of_node);
 
 	comp_id = mtk_ddp_comp_get_id(dev->of_node, MTK_DPI);
 	if (comp_id < 0) {