ARM: EXYNOS: Use exynos_init_io() as map_io callback

Since there is no board specific mapping needed on Exynos,
exynos_init_io() can be simplified and used as map_io callback for both
Exynos4 and Exynos5.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
index 91d457f..561890f 100644
--- a/arch/arm/mach-exynos/common.c
+++ b/arch/arm/mach-exynos/common.c
@@ -351,15 +351,12 @@
  * register the standard cpu IO areas
  */
 
-void __init exynos_init_io(struct map_desc *mach_desc, int size)
+void __init exynos_init_io(void)
 {
 	debug_ll_io_init();
 
 	of_scan_flat_dt(exynos_fdt_map_chipid, NULL);
 
-	if (mach_desc)
-		iotable_init(mach_desc, size);
-
 	/* detect cpu id and rev. */
 	s5p_init_cpu(S5P_VA_CHIPID);