MFH: r499843

multimedia/libva-intel-media-driver: update to 19.1.0 (nop)

Changes: https://github.com/intel/media-driver/compare/42f6f231...intel-media-19.1.0
Changes: https://github.com/intel/media-driver/releases/tag/intel-media-19.1.0
Reported by: GitHub (watch releases)
Approved by: ports-secteam blanket