imx/mach-mx2: use constants namespaced by the corresponding SOC (easy part)

This just leaves devices.c, generic.c and serial.c to clean up.  As
these files are used on more than one SOC they need some more work.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Holger Schurig <hs4233@mail.mn-solutions.de>
Cc: Rabin Vincent <rabin@rab.in>
Cc: Javier Martin <javier.martin@vista-silicon.com>
Cc: Valentin Longchamp <valentin.longchamp@epfl.ch>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Eric Benard <eric@eukrea.com>
Cc: Ivo Clarysse <ivo.clarysse@gmail.com>
Cc: Vladimir Barinov <vbarinov@embeddedalley.com>
Cc: Daniel Schaeffer <daniel.schaeffer@timesys.com>
Cc: Simon POLETTE <spolette@adnlysd018.(none)>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Alan Carvalho de Assis <acassis@gmail.com>
Cc: Luotao Fu <l.fu@pengutronix.de>
diff --git a/arch/arm/mach-mx2/mx27ads.c b/arch/arm/mach-mx2/mx27ads.c
index 83e412b..385fc1c 100644
--- a/arch/arm/mach-mx2/mx27ads.c
+++ b/arch/arm/mach-mx2/mx27ads.c
@@ -320,7 +320,7 @@
 static struct map_desc mx27ads_io_desc[] __initdata = {
 	{
 		.virtual = PBC_BASE_ADDRESS,
-		.pfn = __phys_to_pfn(CS4_BASE_ADDR),
+		.pfn = __phys_to_pfn(MX27_CS4_BASE_ADDR),
 		.length = SZ_1M,
 		.type = MT_DEVICE,
 	},
@@ -334,8 +334,8 @@
 
 MACHINE_START(MX27ADS, "Freescale i.MX27ADS")
 	/* maintainer: Freescale Semiconductor, Inc. */
-	.phys_io        = AIPI_BASE_ADDR,
-	.io_pg_offst    = ((AIPI_BASE_ADDR_VIRT) >> 18) & 0xfffc,
+	.phys_io        = MX27_AIPI_BASE_ADDR,
+	.io_pg_offst    = ((MX27_AIPI_BASE_ADDR_VIRT) >> 18) & 0xfffc,
 	.boot_params    = PHYS_OFFSET + 0x100,
 	.map_io         = mx27ads_map_io,
 	.init_irq       = mx27_init_irq,