imx: provide helper macro to define IO_ADDRESS

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Holger Schurig <hs4233@mail.mn-solutions.de>
Cc: Dmitriy Taychenachev <dimichxp@gmail.com>

arch/arm/plat-mxc/include/mach/hardware.h

@@ -22,6 +22,11 @@
 
 #include <asm/sizes.h>
 
+#define IMX_IO_ADDRESS(addr, module)					\
+	((void __force __iomem *)					\
+	 (((unsigned long)((addr) - (module ## _BASE_ADDR)) < module ## _SIZE) ?\
+	 (addr) - (module ## _BASE_ADDR) + (module ## _BASE_ADDR_VIRT) : 0))
+
 #ifdef CONFIG_ARCH_MX3
 #include <mach/mx3x.h>
 #include <mach/mx31.h>