Log Message:
libva: update to 2.15.0.

version 2.15.0 - 28.Jun.2022
* Add: new display HW attribute to report PCI ID
* Add: sample depth related parameters for AV1e
* Add: refresh_frame_flags for AV1e
* Add: missing fields in va_TraceVAEncSequenceParameterBufferHEVC.
* Add: nvidia-drm to the drm driver map
* Add: type and buffer for delta qp per block
* Deprecation: remove the va_fool support
* Fix:Correct the version of meson build on master branch
* Fix:X11 DRI2: check if device is a render node
* Build:Use also strong stack protection if supported
* Trace:print the string for profile/entrypoint/configattrib