omap3: introduce omap3_map_io

Most OMAP3-based boards use exactly the same code for .map_io method in
the machine_desc structure.
This patch introduces omap3_map_io and updates board-* files to use it
as .map_io method.

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/board-omap3stalker.c

@@ -652,18 +652,12 @@ static void __init omap3_stalker_init(void)
 	omap_mux_init_signal("sdr_cke1", OMAP_PIN_OUTPUT);
 }
 
-static void __init omap3_stalker_map_io(void)
-{
-	omap2_set_globals_3xxx();
-	omap34xx_map_common_io();
-}
-
 MACHINE_START(SBC3530, "OMAP3 STALKER")
 	/* Maintainer: Jason Lam -lzg@ema-tech.com */
 	.phys_io		= 0x48000000,
 	.io_pg_offst		= ((0xfa000000) >> 18) & 0xfffc,
 	.boot_params		= 0x80000100,
-	.map_io			= omap3_stalker_map_io,
+	.map_io			= omap3_map_io,
 	.init_irq		= omap3_stalker_init_irq,
 	.init_machine		= omap3_stalker_init,
 	.timer			= &omap_timer,