mtd: bcm47xxsflash: register this as normal driver

When platform_driver_probe() is used and no device is registered for
this driver -ENODEV is returned and and error message is shown. Not all
BCM47xx SoC have a serial flash chip controller and chip and for them
an error message was shown.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: NArtem Bityutskiy <artem.bityutskiy@linux.intel.com>

drivers/mtd/devices/bcm47xxsflash.c

@@ -89,6 +89,7 @@ static int bcm47xxsflash_remove(struct platform_device *pdev)
 }
 
 static struct platform_driver bcma_sflash_driver = {
+	.probe	= bcm47xxsflash_probe,
 	.remove = bcm47xxsflash_remove,
 	.driver = {
 		.name = "bcma_sflash",
@@ -100,7 +101,7 @@ static int __init bcm47xxsflash_init(void)
 {
 	int err;
 
-	err = platform_driver_probe(&bcma_sflash_driver, bcm47xxsflash_probe);
+	err = platform_driver_register(&bcma_sflash_driver);
 	if (err)
 		pr_err("Failed to register BCMA serial flash driver: %d\n",
 		       err);