video/hdmi: Relicense header under MIT license

OpenBSD wants to reuse this file but needs the license to be more
permissive.

Acked-by: Alban Bedel <[email protected]>
Acked-by: Daniel Vetter <[email protected]>
Acked-by: Alex Deucher <[email protected]>
Acked-by: Christian König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
1 file changed