spi: drop owner assignment from platform_drivers

A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

drivers/spi/spi-orion.c

@@ -551,7 +551,6 @@ static const struct dev_pm_ops orion_spi_pm_ops = {
 static struct platform_driver orion_spi_driver = {
 	.driver = {
 		.name	= DRIVER_NAME,
-		.owner	= THIS_MODULE,
 		.pm	= &orion_spi_pm_ops,
 		.of_match_table = of_match_ptr(orion_spi_of_match_table),
 	},