crypto: virtio - Replace deprecated CPU-hotplug functions.

The functions get_online_cpus() and put_online_cpus() have been
deprecated during the CPU hotplug rework. They map directly to
cpus_read_lock() and cpus_read_unlock().

Replace deprecated CPU-hotplug functions with the official version.
The behavior remains unchanged.

Cc: Gonglei <[email protected]>
Cc: "Michael S. Tsirkin" <[email protected]>
Cc: Jason Wang <[email protected]>
Cc: Herbert Xu <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Sebastian Andrzej Siewior <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>

drivers/crypto/virtio/virtio_crypto_core.c

@@ -187,9 +187,9 @@ static int virtcrypto_init_vqs(struct virtio_crypto *vi)
 	if (ret)
 		goto err_free;
 
-	get_online_cpus();
+	cpus_read_lock();
 	virtcrypto_set_affinity(vi);
-	put_online_cpus();
+	cpus_read_unlock();
 
 	return 0;