misc: x86: Staticize and constify driver ops

Set the ops structure as static const. The structure is not accessible
from outside of this driver and is not going to be modified at runtime.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

drivers/misc/qfw.c

@@ -152,7 +152,7 @@ UCLASS_DRIVER(qfw) = {
 	.per_device_auto	= sizeof(struct qfw_dev),
 };
 
-struct bootdev_ops qfw_bootdev_ops = {
+static const struct bootdev_ops qfw_bootdev_ops = {
 	.get_bootflow	= qfw_get_bootflow,
 };