drm/exynos: Fix typo in exynos_mixer.c

Correct spelling "sucessful" to "successful" in
drivers/gpu/drm/exynos/exynos_mixer.c

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/exynos/exynos_mixer.c

@@ -1044,7 +1044,7 @@ static int mixer_remove(struct platform_device *pdev)
 					platform_get_drvdata(pdev);
 	struct mixer_context *ctx = (struct mixer_context *)drm_hdmi_ctx->ctx;
 
-	dev_info(dev, "remove sucessful\n");
+	dev_info(dev, "remove successful\n");
 
 	mixer_resource_poweroff(ctx);
 	mixer_resources_cleanup(ctx);