arm: mach-omap2: n8x0: clean up dummy onenand init

When OneNAND support is disabled, the platform code defines NULL
board_onenand_data and empty init function for us. By utilizing this we
can avoid cluttering board files with dummy definitions/wrappers.
Signed-off-by: NAaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/board-n8x0.c

@@ -184,23 +184,15 @@ static struct mtd_partition onenand_partitions[] = {
 	},
 };
 
-static struct omap_onenand_platform_data board_onenand_data = {
+static struct omap_onenand_platform_data board_onenand_data[] = {
+	{
 		.cs		= 0,
 		.gpio_irq	= 26,
 		.parts		= onenand_partitions,
 		.nr_parts	= ARRAY_SIZE(onenand_partitions),
 		.flags		= ONENAND_SYNC_READ,
+	}
 };
-
-static void __init n8x0_onenand_init(void)
-{
-	gpmc_onenand_init(&board_onenand_data);
-}
-
-#else
-
-static void __init n8x0_onenand_init(void) {}
-
 #endif
 
 #if defined(CONFIG_MENELAUS) &&						\
@@ -669,7 +661,7 @@ static void __init n8x0_init_machine(void)
 					ARRAY_SIZE(n810_i2c_board_info_2));
 
 	omap_serial_init();
-	n8x0_onenand_init();
+	gpmc_onenand_init(board_onenand_data);
 	n8x0_mmc_init();
 	n8x0_usb_init();
 }