drm/omap: convert dss_mgr_set_lcd_config to accept omap_channel

We are removing uses of 'struct omap_overlay_manager'. This patch
changes dss_mgr_set_lcd_config() to accept 'enum omap_channel' instead
of 'struct omap_overlay_manager'.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/gpu/drm/omapdrm/dss/output.c b/drivers/gpu/drm/omapdrm/dss/output.c
index 20255ca..f926ed7 100644
--- a/drivers/gpu/drm/omapdrm/dss/output.c
+++ b/drivers/gpu/drm/omapdrm/dss/output.c
@@ -209,10 +209,10 @@
 }
 EXPORT_SYMBOL(dss_mgr_set_timings);
 
-void dss_mgr_set_lcd_config(struct omap_overlay_manager *mgr,
+void dss_mgr_set_lcd_config(enum omap_channel channel,
 		const struct dss_lcd_mgr_config *config)
 {
-	dss_mgr_ops->set_lcd_config(mgr->id, config);
+	dss_mgr_ops->set_lcd_config(channel, config);
 }
 EXPORT_SYMBOL(dss_mgr_set_lcd_config);