ARM: pxa: use correct __iomem annotations

This tries to clear up the confusion between integers and iomem pointers
in the marvell pxa platform. MMIO addresses are supposed to be __iomem*
values, in order to let the Linux type checking work correctly. This
patch moves the cast to __iomem as far back as possible, to the place
where the MMIO virtual address windows are defined.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

arch/arm/mach-pxa/pxa27x.c

@@ -390,7 +390,7 @@ void __init pxa27x_init_irq(void)
 
 static struct map_desc pxa27x_io_desc[] __initdata = {
 	{	/* Mem Ctl */
-		.virtual	= SMEMC_VIRT,
+		.virtual	= (unsigned long)SMEMC_VIRT,
 		.pfn		= __phys_to_pfn(PXA2XX_SMEMC_BASE),
 		.length		= 0x00200000,
 		.type		= MT_DEVICE