update NEWS for 2.8.0

Signed-off-by: Carl Zhang <[email protected]>

NEWS

@@ -1,6 +1,30 @@
-libva NEWS -- summary of user visible changes.  2020-03-26
+libva NEWS -- summary of user visible changes.  2020-06-18
 Copyright (C) 2009-2020 Intel Corporation
 
+version 2.8.0 - 18.Jun.2020
+* trace: enable return value trace for successful function call
+* trace: divide va_TraceEndPicture to two seperate function
+* trace: add support for VAProfileHEVCSccMain444_10
+* fix:Fixes file descriptor leak
+* add fourcc code for P012 format
+* travis: Add a test that code files don't have the exec bit set
+* Remove the execute bit from all source code files
+* meson: Allow for libdir and includedir to be absolute paths
+* trace: Fix format string warnings
+* fix:Fix clang warning (reading garbage)
+* add definition to enforce both reflist not empty
+* trace: List correct field names in va_TraceVAPictureParameterBufferHEVC
+* change the return value to be UNIMPLEMENTED when the function pointer is NULL
+* remove check of vaPutSurface implementation
+* Add new slice structure flag for CAPS reporting
+* VA/X11: VAAPI driver mapping for iris DRI driver
+* VA/X11: enable driver candidate selection for DRI2
+* Add SCC flags to enable/disable features
+* fix: Fix HDR10 MaxCLL and MaxFALL documentation
+* Add VAProfileHEVCSccMain444_10 for HEVC
+* change the compatible list to be dynamic one
+* trace:Convert VAProfileAV1Profile0 VAProfileAV1Profile1 to string
+
 version 2.7.0 - 26.Mar.2020
 * trace: av1 decode buffers trace
 * trace: Add HEVC REXT and SCC trace for decoding.