ARM: OMAP2+: Use SoC specifc map_io

There's no longer any need for the board specific
map_io.

Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/board-rm680.c b/arch/arm/mach-omap2/board-rm680.c
index a3182e8..a98db61 100644
--- a/arch/arm/mach-omap2/board-rm680.c
+++ b/arch/arm/mach-omap2/board-rm680.c
@@ -143,16 +143,10 @@
 	rm680_peripherals_init();
 }
 
-static void __init rm680_map_io(void)
-{
-	omap2_set_globals_3xxx();
-	omap34xx_map_common_io();
-}
-
 MACHINE_START(NOKIA_RM680, "Nokia RM-680 board")
 	.boot_params	= 0x80000100,
 	.reserve	= omap_reserve,
-	.map_io		= rm680_map_io,
+	.map_io		= omap3_map_io,
 	.init_early	= omap3630_init_early,
 	.init_irq	= omap3_init_irq,
 	.init_machine	= rm680_init,