drm/rockchip: dw_hdmi: fix incorrect clock in vpll clock error message

Error message incorrectly refers to grf clock instead of vpll clock.
Signed-off-by: Jonathan Liu <net147@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20201024035321.4898-1-net147@gmail.com

drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c

@@ -202,7 +202,7 @@ static int rockchip_hdmi_parse_dt(struct rockchip_hdmi *hdmi)
 	} else if (PTR_ERR(hdmi->vpll_clk) == -EPROBE_DEFER) {
 		return -EPROBE_DEFER;
 	} else if (IS_ERR(hdmi->vpll_clk)) {
-		DRM_DEV_ERROR(hdmi->dev, "failed to get grf clock\n");
+		DRM_DEV_ERROR(hdmi->dev, "failed to get vpll clock\n");
 		return PTR_ERR(hdmi->vpll_clk);
 	}