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/tosa.c b/arch/arm/mach-pxa/tosa.c
index 0ee1df4..3883385 100644
--- a/arch/arm/mach-pxa/tosa.c
+++ b/arch/arm/mach-pxa/tosa.c
@@ -953,7 +953,7 @@
 
 MACHINE_START(TOSA, "SHARP Tosa")
 	.fixup          = fixup_tosa,
-	.map_io         = pxa_map_io,
+	.map_io         = pxa25x_map_io,
 	.nr_irqs	= TOSA_NR_IRQS,
 	.init_irq       = pxa25x_init_irq,
 	.init_machine   = tosa_init,