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>
diff --git a/arch/arm/mach-pxa/himalaya.c b/arch/arm/mach-pxa/himalaya.c
index 01b7f07..e8603eb 100644
--- a/arch/arm/mach-pxa/himalaya.c
+++ b/arch/arm/mach-pxa/himalaya.c
@@ -160,7 +160,7 @@
 
 MACHINE_START(HIMALAYA, "HTC Himalaya")
 	.boot_params = 0xa0000100,
-	.map_io = pxa_map_io,
+	.map_io = pxa25x_map_io,
 	.init_irq = pxa25x_init_irq,
 	.init_machine = himalaya_init,
 	.timer = &pxa_timer,