[ARM] mmp: rename pxa_map_io() to mmp_map_io()

Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

arch/arm/mach-mmp/common.c

@@ -31,7 +31,7 @@ static struct map_desc standard_io_desc[] __initdata = {
 	},
 };
 
-void __init pxa_map_io(void)
+void __init mmp_map_io(void)
 {
 	iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
 }