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/generic.h b/arch/arm/mach-pxa/generic.h
index 4b1ad27..d2e8bc3 100644
--- a/arch/arm/mach-pxa/generic.h
+++ b/arch/arm/mach-pxa/generic.h
@@ -20,7 +20,11 @@
 #endif
 extern void __init pxa27x_init_irq(void);
 extern void __init pxa3xx_init_irq(void);
+
 extern void __init pxa_map_io(void);
+extern void __init pxa25x_map_io(void);
+extern void __init pxa27x_map_io(void);
+extern void __init pxa3xx_map_io(void);
 
 extern unsigned int get_clk_frequency_khz(int info);