fpga: altera: drop driver owner assignment

Core in spi_register_driver() already sets the .owner, so driver
does not need to.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Acked-by: Xu Yilun <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Xu Yilun <[e-mail]>

drivers/fpga/altera-ps-spi.c

···
 static struct spi_driver altera_ps_driver = {
 	.driver = {
 		.name = "altera-ps-spi",
-		.owner = THIS_MODULE,
 		.of_match_table = of_ef_match,
 	},
 	.id_table = altera_ps_spi_ids,