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/palmtx.c

@@ -334,7 +334,7 @@ static struct map_desc palmtx_io_desc[] __initdata = {
 
 static void __init palmtx_map_io(void)
 {
-	pxa_map_io();
+	pxa27x_map_io();
 	iotable_init(palmtx_io_desc, ARRAY_SIZE(palmtx_io_desc));
 }