integrator: use io-accessors for board init

Casting around to *(volatile ulong *) doesn't look good, so include
the <asm/io.h> macros and use good old readl() instead.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

board/armltd/integrator/integrator.c

@@ -35,6 +35,7 @@
 
 #include <common.h>
 #include <netdev.h>
+#include <asm/io.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -101,15 +102,15 @@ int dram_init (void)
 #ifdef CONFIG_CM_SPD_DETECT
 	{
 extern void dram_query(void);
-	unsigned long cm_reg_sdram;
-	unsigned long sdram_shift;
+	u32 cm_reg_sdram;
+	u32 sdram_shift;
 
 	dram_query();	/* Assembler accesses to CM registers */
 			/* Queries the SPD values	      */
 
 	/* Obtain the SDRAM size from the CM SDRAM register */
 
-	cm_reg_sdram = *(volatile ulong *)(CM_BASE + OS_SDRAM);
+	cm_reg_sdram = readl(CM_BASE + OS_SDRAM);
 	/*   Register	      SDRAM size
 	 *
 	 *   0xXXXXXXbbb000bb	 16 MB