ARM: OMAP: N8x0: Add retu-headset platform data

This was earlier in board-n800-audio.c but got removed by the commit
c65c733e.
Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/board-n800.c

@@ -568,10 +568,20 @@ static struct omap_gpio_switch n800_gpio_switches[] __initdata = {
 	},
 };
 
+#if defined(CONFIG_CBUS_RETU_HEADSET)
+static struct platform_device retu_headset_device = {
+	.name	= "retu-headset",
+	.id	= -1,
+};
+#endif
+
 static struct platform_device *n800_devices[] __initdata = {
 #if defined(CONFIG_CBUS_RETU) && defined(CONFIG_LEDS_OMAP_PWM)
 	&n800_keypad_led_device,
 #endif
+#if defined(CONFIG_CBUS_RETU_HEADSET)
+	&retu_headset_device,
+#endif
 };
 
 #ifdef CONFIG_MENELAUS