mtd: fsl_ifc_nand: fix sparse warnings

drivers/mtd/nand/fsl_ifc_nand.c:196:34: warning: cast removes address space of expression [sparse]
drivers/mtd/nand/fsl_ifc_nand.c:196:34: warning: incorrect type in initializer (different address spaces) [sparse]
drivers/mtd/nand/fsl_ifc_nand.c:196:34:    expected unsigned int [noderef] [usertype] <asn:2>*mainarea [sparse]
drivers/mtd/nand/fsl_ifc_nand.c:196:34:    got unsigned int [usertype] *<noident> [sparse]
...

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

drivers/mtd/nand/fsl_ifc_nand.c

@@ -193,7 +193,7 @@ static int is_blank(struct mtd_info *mtd, unsigned int bufnum)
 	struct nand_chip *chip = mtd->priv;
 	struct fsl_ifc_mtd *priv = chip->priv;
 	u8 __iomem *addr = priv->vbase + bufnum * (mtd->writesize * 2);
-	u32 __iomem *mainarea = (u32 *)addr;
+	u32 __iomem *mainarea = (u32 __iomem *)addr;
 	u8 __iomem *oob = addr + mtd->writesize;
 	int i;
 
@@ -591,8 +591,8 @@ static uint8_t fsl_ifc_read_byte16(struct mtd_info *mtd)
 	 * next byte.
 	 */
 	if (ifc_nand_ctrl->index < ifc_nand_ctrl->read_bytes) {
-		data = in_be16((uint16_t *)&ifc_nand_ctrl->
-					addr[ifc_nand_ctrl->index]);
+		data = in_be16((uint16_t __iomem *)&ifc_nand_ctrl->
+			       addr[ifc_nand_ctrl->index]);
 		ifc_nand_ctrl->index += 2;
 		return (uint8_t) data;
 	}