mtd: s3c2410: Fix compiler warnings

Fixes the following warnings:
‘s3c2410_nand_correct_data’ defined but not used [-Wunused-function]
‘s3c2410_nand_enable_hwecc’ defined but not used [-Wunused-function]
‘s3c2412_nand_enable_hwecc’ defined but not used [-Wunused-function]
‘s3c2440_nand_enable_hwecc’ defined but not used [-Wunused-function]
‘s3c2410_nand_calculate_ecc’ defined but not used [-Wunused-function]
‘s3c2412_nand_calculate_ecc’ defined but not used [-Wunused-function]
‘s3c2440_nand_calculate_ecc’ defined but not used [-Wunused-function]

The above functions are called only when CONFIG_MTD_NAND_S3C2410_HWECC
is defined. Thus making them conditional.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

drivers/mtd/nand/s3c2410.c

@@ -442,6 +442,7 @@ static int s3c2412_nand_devready(struct mtd_info *mtd)
 
 /* ECC handling functions */
 
+#ifdef CONFIG_MTD_NAND_S3C2410_HWECC
 static int s3c2410_nand_correct_data(struct mtd_info *mtd, u_char *dat,
 				     u_char *read_ecc, u_char *calc_ecc)
 {
@@ -592,6 +593,7 @@ static int s3c2440_nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat,
 
 	return 0;
 }
+#endif
 
 /* over-ride the standard functions for a little more speed. We can
  * use read/write block to move the data buffers to/from the controller