drm/exynos/mixer: enable HDMI-PHY before configuring MIXER

According to documentation HDMI-PHY must be on prior to MIXER configuration.

Signed-off-by: Andrzej Hajda <[e-mail]>
Signed-off-by: Inki Dae <[e-mail]>

drivers/gpu/drm/exynos/exynos_mixer.c

···
 
 	pm_runtime_get_sync(ctx->dev);
 
+	exynos_drm_pipe_clk_enable(crtc, true);
+
 	mixer_vsync_set_update(ctx, false);
 
 	mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);
···
 
 	for (i = 0; i < MIXER_WIN_NR; i++)
 		mixer_disable_plane(crtc, &ctx->planes[i]);
+
+	exynos_drm_pipe_clk_enable(crtc, false);
 
 	pm_runtime_put(ctx->dev);