virtio: clarify that ABI is usable by any implementations

We want others to implement and use virtio, so it makes sense to BSD
license the non-__KERNEL__ parts of the headers to make this crystal
clear.

Signed-off-by: Rusty Russell <[email protected]>
Acked-by: Christian Borntraeger <[email protected]>
Acked-by: Mark McLoughlin <[email protected]>
Acked-by: Ryan Harper <[email protected]>
Acked-by: Eric Van Hensbergen <[email protected]>
Acked-by: Anthony Liguori <[email protected]>
8 files changed