ASoC: add rt298 codec driver

It is the initial version of ALC298 codec driver.

Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

include/sound/rt298.h

@@ -0,0 +1,20 @@
+/*
+ * linux/sound/rt286.h -- Platform data for RT286
+ *
+ * Copyright 2013 Realtek Microelectronics
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __LINUX_SND_RT298_H
+#define __LINUX_SND_RT298_H
+
+struct rt298_platform_data {
+	bool cbj_en; /*combo jack enable*/
+	bool gpio2_en; /*GPIO2 enable*/
+	bool suspend_power_off; /* power is off during suspend */
+};
+
+#endif