kvm: Add compat_ioctl for device control API

This API shouldn't have 32/64-bit issues, but VFS assumes it does
unless told otherwise.
Signed-off-by: NScott Wood <scottwood@freescale.com>
Signed-off-by: NGleb Natapov <gleb@redhat.com>

virt/kvm/kvm_main.c

@@ -2221,6 +2221,9 @@ static int kvm_device_release(struct inode *inode, struct file *filp)
 
 static const struct file_operations kvm_device_fops = {
 	.unlocked_ioctl = kvm_device_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl = kvm_device_ioctl,
+#endif
 	.release = kvm_device_release,
 };