mtd: spear_smi: add missing __iomem annotation

Added missing __iomem annotation in order to fix the following
sparse warnings:

drivers/mtd/devices/spear_smi.c:566:13: warning: incorrect type in assignment (different address spaces)
drivers/mtd/devices/spear_smi.c:566:13:    expected void *src
drivers/mtd/devices/spear_smi.c:566:13:    got void [noderef] <asn:2>*
drivers/mtd/devices/spear_smi.c:586:9: warning: incorrect type in argument 2 (different address spaces)
drivers/mtd/devices/spear_smi.c:586:9:    expected void const volatile [noderef] <asn:2>*<noident>
drivers/mtd/devices/spear_smi.c:586:9:    got unsigned char [usertype] *<noident>
drivers/mtd/devices/spear_smi.c:659:14: warning: incorrect type in assignment (different address spaces)
drivers/mtd/devices/spear_smi.c:659:14:    expected void *dest
drivers/mtd/devices/spear_smi.c:659:14:    got void [noderef] <asn:2>*
drivers/mtd/devices/spear_smi.c:620:9: warning: incorrect type in argument 1 (different address spaces)
drivers/mtd/devices/spear_smi.c:620:9:    expected void volatile [noderef] <asn:2>*<noident>
drivers/mtd/devices/spear_smi.c:620:9:    got void *dest
drivers/mtd/devices/spear_smi.c:620:9: warning: incorrect type in argument 1 (different address spaces)
drivers/mtd/devices/spear_smi.c:620:9:    expected void volatile [noderef] <asn:2>*<noident>
drivers/mtd/devices/spear_smi.c:620:9:    got void *dest
drivers/mtd/devices/spear_smi.c:620:9: warning: incorrect type in argument 1 (different address spaces)
drivers/mtd/devices/spear_smi.c:620:9:    expected void volatile [noderef] <asn:2>*<noident>
drivers/mtd/devices/spear_smi.c:620:9:    got void *dest

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

drivers/mtd/devices/spear_smi.c

@@ -550,7 +550,7 @@ static int spear_mtd_read(struct mtd_info *mtd, loff_t from, size_t len,
 {
 	struct spear_snor_flash *flash = get_flash_data(mtd);
 	struct spear_smi *dev = mtd->priv;
-	void *src;
+	void __iomem *src;
 	u32 ctrlreg1, val;
 	int ret;
 
@@ -583,7 +583,7 @@ static int spear_mtd_read(struct mtd_info *mtd, loff_t from, size_t len,
 
 	writel(val, dev->io_base + SMI_CR1);
 
-	memcpy_fromio(buf, (u8 *)src, len);
+	memcpy_fromio(buf, src, len);
 
 	/* restore ctrl reg1 */
 	writel(ctrlreg1, dev->io_base + SMI_CR1);
@@ -596,7 +596,7 @@ static int spear_mtd_read(struct mtd_info *mtd, loff_t from, size_t len,
 }
 
 static inline int spear_smi_cpy_toio(struct spear_smi *dev, u32 bank,
-		void *dest, const void *src, size_t len)
+		void __iomem *dest, const void *src, size_t len)
 {
 	int ret;
 	u32 ctrlreg1;
@@ -643,7 +643,7 @@ static int spear_mtd_write(struct mtd_info *mtd, loff_t to, size_t len,
 {
 	struct spear_snor_flash *flash = get_flash_data(mtd);
 	struct spear_smi *dev = mtd->priv;
-	void *dest;
+	void __iomem *dest;
 	u32 page_offset, page_size;
 	int ret;