mtd: bcm47xxnflash: fix message

This is not a serial flash driver, but a nand flash driver
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: NArtem Bityutskiy <artem.bityutskiy@linux.intel.com>

drivers/mtd/nand/bcm47xxnflash/main.c

@@ -94,7 +94,8 @@ static int __init bcm47xxnflash_init(void)
 	 */
 	err = platform_driver_probe(&bcm47xxnflash_driver, bcm47xxnflash_probe);
 	if (err)
-		pr_err("Failed to register serial flash driver: %d\n", err);
+		pr_err("Failed to register bcm47xx nand flash driver: %d\n",
+		       err);
 
 	return err;
 }