Add an explicit MODULE_VERSION("0.0.1") specification
for a vhost_vsock module. It is useful because it allows
userspace to check if vhost_vsock is there when it is
configured as a built-in.

Without this change, there is no /sys/module/vhost_vsock directory.

With this change:
$ ls -la /sys/module/vhost_vsock/
total 0
drwxr-xr-x   2 root root    0 Sep 26 15:59 .
drwxr-xr-x 100 root root    0 Sep 26 15:59 ..
--w-------   1 root root 4096 Sep 26 15:59 uevent
-r--r--r--   1 root root 4096 Sep 26 15:59 version

Signed-off-by: Alexander Mikhalitsyn <redacted>
---
 drivers/vhost/vsock.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c
index 802153e23073..287ea8e480b5 100644
--- a/drivers/vhost/vsock.c
+++ b/drivers/vhost/vsock.c

@@ -956,6 +956,7 @@ static void __exit vhost_vsock_exit(void)
 
 module_init(vhost_vsock_init);
 module_exit(vhost_vsock_exit);
+MODULE_VERSION("0.0.1");
 MODULE_LICENSE("GPL v2");
 MODULE_AUTHOR("Asias He");
 MODULE_DESCRIPTION("vhost transport for vsock ");

-- 
2.34.1