OMAPDSS: add dss_get_core_pdev()

Add dss_get_core_pdev() which returns the platform device for dss core
device. The following patches use the core pdev to register sysfs files
in the compat code.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

drivers/video/omap2/dss/core.c

@@ -66,6 +66,11 @@ enum omapdss_version omapdss_get_version(void)
 }
 EXPORT_SYMBOL(omapdss_get_version);
 
+struct platform_device *dss_get_core_pdev(void)
+{
+	return core.pdev;
+}
+
 /* REGULATORS */
 
 struct regulator *dss_get_vdds_dsi(void)

drivers/video/omap2/dss/dss.h

@@ -160,6 +160,7 @@ struct seq_file;
 struct platform_device;
 
 /* core */
+struct platform_device *dss_get_core_pdev(void);
 struct bus_type *dss_get_bus(void);
 struct regulator *dss_get_vdds_dsi(void);
 struct regulator *dss_get_vdds_sdi(void);