omap: header: remove unused data-type

Remove unused data type omap_gpio_switch_config

Thereby also get rid of following sparse warnings:
arch/arm/plat-omap/include/plat/board.h :121:20:
	warning: dubious bitfield without explicit `signed' or `unsigned'
arch/arm/plat-omap/include/plat/board.h :122:19:
	warning: dubious bitfield without explicit `signed' or `unsigned'
arch/arm/plat-omap/include/plat/board.h :123:24:
	warning: dubious bitfield without explicit `signed' or `unsigned'
Signed-off-by: Vikram Pandita <vikram.pandita@ti.com>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/plat-omap/include/plat/board.h

@@ -114,15 +114,6 @@ struct omap_pwm_led_platform_data {
 	void (*set_power)(struct omap_pwm_led_platform_data *self, int on_off);
 };
 
-/* See arch/arm/plat-omap/include/mach/gpio-switch.h for definitions */
-struct omap_gpio_switch_config {
-	char name[12];
-	u16 gpio;
-	int flags:4;
-	int type:4;
-	int key_code:24; /* Linux key code */
-};
-
 struct omap_uart_config {
 	/* Bit field of UARTs present; bit 0 --> UART1 */
 	unsigned int enabled_uarts;