EGL: sync headers with Khronos

Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
18 jobs for !1636 with egl-khronos-sync in 20 minutes and 26 seconds (queued for 3 seconds)
detached
Status Name Job ID Coverage
  Containers Build
passed debian #506062

00:03:32

 
  Build+Test
passed meson-arm64 #506071

00:02:56

passed meson-armhf #506070

00:02:11

passed meson-clang #506064

00:09:03

passed meson-clover #506068

00:08:36

passed meson-i386 #506072

00:04:16

passed meson-main #506067

00:12:45

passed meson-swr-glvnd #506063

00:07:47

passed meson-vulkan #506069

00:02:41

passed scons-llvm #506074

00:06:51

passed scons-nollvm #506073

00:03:43

passed scons-swr #506065

00:10:11

passed scons-win64 #506066

00:10:53

 
  Test
passed test-llvmpipe-gles2 1/4 #506075

00:03:52

passed test-llvmpipe-gles2 2/4 #506076

00:04:05

passed test-llvmpipe-gles2 3/4 #506077

00:03:48

passed test-llvmpipe-gles2 4/4 #506078

00:03:47

 
  External
passed continuous-integration/appveyor/branch