[OE-core] [PATCH] mesa: Upgrade to 19.3.0

[Ross Burton]

Breaks the no-x11 builds.

Waffle:

/home/pokybuild/yocto-worker/no-x11/build/build/tmp/work/core2-64-poky-linux/waffle/1.6.0-r0/recipe-sysroot/usr/include/EGL/eglplatform.h:134:10: 
fatal error: X11/Xlib.h: No such file or directory
   134 | #include <X11/Xlib.h>
       |          ^~~~~~~~~~~~

glew:

In file included from include/GL/eglew.h:107,
                  from src/glew.c:43:
/home/pokybuild/yocto-worker/no-x11/build/build/tmp/work/core2-64-poky-linux/glew/2.1.0-r0/recipe-sysroot/usr/include/EGL/eglplatform.h:134:10: 
fatal error: X11/Xlib.h: No such file or directory
   134 | #include <X11/Xlib.h>
       |          ^~~~~~~~~~~~

I believe the big X11 on/off toggle changed in this release?

Ross