ARM: pxa: Introduce pxa{25x,27x,3xx}_map_io()

This patch introduces pxa2xx_map_io() and pxa3xx_map_io() to distinguish
between PXA25x/PXA27x and PXA3xx memory mapping.

Also, fixup for platforms broken after introducing pxa{25x,27x}_map_io()
and pxa3xx_map_io() is included.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

arch/arm/mach-pxa/csb726.c

@@ -273,7 +273,7 @@ static void __init csb726_init(void)
 
 MACHINE_START(CSB726, "Cogent CSB726")
 	.boot_params	= 0xa0000100,
-	.map_io         = pxa_map_io,
+	.map_io         = pxa27x_map_io,
 	.init_irq       = pxa27x_init_irq,
 	.init_machine   = csb726_init,
 	.timer          = &pxa_timer,