intel-vaapi-driver: Update to 2.3.0

Changes:
2.3.0
-----
* Bump version to 2.3.0
* Add new PCI ID for KBL and CFL
* Fix frame corruption when there are big MVs in VP8 encoding
* Fix dynamically bitrate resetting in AVC encoding
* Fix build errors when the toolchain doesn't support -fstack-protector
* Fix memory leak issue
* Make sure the achieved bitrate meet the requirement for VP8 encoding
* Optimize VPP on GEN8

(leot)