cdx: controller: Drop unneeded driver.pm NULL assignment

Struct driver in platform_driver is zero-ed so there is no need to
assign its 'pm' member to NULL.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Acked-by: Nikhil Agarwal <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/cdx/controller/cdx_controller.c

···
 static struct platform_driver cdx_pdriver = {
 	.driver = {
 		   .name = "cdx-controller",
-		   .pm = NULL,
 		   .of_match_table = cdx_match_table,
 		   },
 	.probe = xlnx_cdx_probe,