OMAPDSS: split manager sysfs code

Separate sysfs code for managers to a separate file. This is a bit
cleaner, and will allow us later to easily switch off the sysfs support
via Kconfig option.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/video/omap2/dss/Makefile

 obj-$(CONFIG_OMAP2_DSS) += omapdss.o
 omapdss-y := core.o dss.o dss_features.o dispc.o dispc_coefs.o display.o \
-	manager.o overlay.o overlay-sysfs.o apply.o
+	manager.o manager-sysfs.o overlay.o overlay-sysfs.o apply.o
 omapdss-$(CONFIG_OMAP2_DSS_DPI) += dpi.o
 omapdss-$(CONFIG_OMAP2_DSS_RFBI) += rfbi.o
 omapdss-$(CONFIG_OMAP2_DSS_VENC) += venc.o venc_panel.o

drivers/video/omap2/dss/dss.h

@@ -254,6 +254,10 @@ static inline bool dss_mgr_is_lcd(enum omap_channel id)
 		return false;
 }
 
+int dss_manager_kobj_init(struct omap_overlay_manager *mgr,
+		struct platform_device *pdev);
+void dss_manager_kobj_uninit(struct omap_overlay_manager *mgr);
+
 /* overlay */
 void dss_init_overlays(struct platform_device *pdev);
 void dss_uninit_overlays(struct platform_device *pdev);