Update the top-level LICENSE file that provides the full text of the BSD-3
Clause license that this project uses. Two updates were made to it:
* Update the year to include 2022
* Removed an extra line: "All rights reserved"
The text matches exactly the reference found here: https://opensource.org/licenses/BSD-3-Clause
Tracked-On: #5647
Signed-off-by: Geoffroy Van Cutsem <geoffroy.vancutsem@intel.com>
LICENSE file copyright must reflect latest year of contributions
(before this update, it said 2017-2018).
Tracked-On: #5611
Signed-off-by: David B. Kinder <david.b.kinder@intel.com>