[linux] Remove unused can_probe field from driver definition

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/drivers/linux/af_packet.c

@@ -322,5 +322,4 @@ struct linux_driver af_packet_nic_driver __linux_driver = {
 	.name = "af_packet",
 	.probe = af_packet_nic_probe,
 	.remove = af_packet_nic_remove,
-	.can_probe = 1,
 };

src/drivers/linux/linux.c

@@ -63,11 +63,6 @@ static int linux_probe(struct root_device *rootdev)
 			continue;
 		}
 
-		if (! driver->can_probe) {
-			printf("Driver '%s' cannot handle any more devices\n", driver->name);
-			continue;
-		}
-
 		/* We found a matching driver so add the device to the hierarchy */
 		list_add(&device->dev.siblings, &rootdev->dev.children);
 		device->dev.parent = &rootdev->dev;

src/drivers/linux/slirp.c

@@ -549,5 +549,4 @@ struct linux_driver slirp_driver __linux_driver = {
 	.name = "slirp",
 	.probe = slirp_probe,
 	.remove = slirp_remove,
-	.can_probe = 1,
 };

src/drivers/linux/tap.c

@@ -258,5 +258,4 @@ struct linux_driver tap_driver __linux_driver = {
 	.name = "tap",
 	.probe = tap_probe,
 	.remove = tap_remove,
-	.can_probe = 1,
 };

src/include/ipxe/linux.h

@@ -58,8 +58,6 @@ struct linux_driver {
 	int (*probe)(struct linux_device *device, struct linux_device_request *request);
 	/** Remove function */
 	void (*remove)(struct linux_device *device);
-	/** Can the driver probe any more devices? */
-	int can_probe;
 };
 
 /** Linux driver table */