Missing GLES3.1 functions, which are present in features.txt

```
  Additional functionality not covered above:
      glMemoryBarrierByRegion                           DONE
      glGetTexLevelParameter[fi]v - needs updates       DONE
      glGetBooleani_v - restrict to GLES enums
      gl_HelperInvocation support                       DONE (r600, panfrost, asahi, crocus)
```