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/zeus.c b/arch/arm/mach-pxa/zeus.c
index dea46a2..0909df2 100644
--- a/arch/arm/mach-pxa/zeus.c
+++ b/arch/arm/mach-pxa/zeus.c
@@ -883,7 +883,7 @@
 
 static void __init zeus_map_io(void)
 {
-	pxa_map_io();
+	pxa27x_map_io();
 
 	iotable_init(zeus_io_desc, ARRAY_SIZE(zeus_io_desc));