ARM: OMAP2: Register the L4 io bus to boot OMAP2

This patch enables OMAP2 to boot.
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/io.c

@@ -42,6 +42,12 @@ static struct map_desc omap2_io_desc[] __initdata = {
 		.length		= L3_24XX_SIZE,
 		.type		= MT_DEVICE
 	},
+	{
+		.virtual        = L4_24XX_VIRT,
+		.pfn            = __phys_to_pfn(L4_24XX_PHYS),
+		.length         = L4_24XX_SIZE,
+		.type           = MT_DEVICE
+	},
 #ifdef CONFIG_ARCH_OMAP2430
 	{
 		.virtual	= L4_WK_243X_VIRT,