mesa: switch to using glvnd PACKAGECONFIG setting

Support for enabling glvnd support in mesa landed in
OE-Core master a while back, so we can take advantage
of that here.

Signed-off-by: Matt Madison <matt@madison.systems>

recipes-graphics/mesa/mesa_%.bbappend

@@ -1,44 +1,4 @@
-EXTRA_OEMESON:append:tegra = " -Dglvnd=true"
-DEPENDS:append:tegra = " libglvnd"
+PACKAGECONFIG:append:tegra = " glvnd"
 PROVIDES:tegra = "virtual/mesa virtual/libgbm"
-
 RDEPENDS:libgbm:append:tegra = " tegra-gbm-backend egl-gbm"
-
-# Workaround for the do_install:append() present in the OE-Core recipe
-do_install:prepend:tegra() {
-    install -d ${D}${includedir}/EGL
-    touch ${D}${includedir}/EGL/eglplatform.h
-}
-
-do_install:append:tegra() {
-    rm -rf ${D}${includedir}/EGL
-}
-
 PACKAGE_ARCH:tegra = "${TEGRA_PKGARCH}"
-FILES:libegl-mesa:append:tegra = " ${libdir}/libEGL_mesa.so.* ${datadir}/glvnd"
-FILES:libegl-mesa-dev:append:tegra = " ${libdir}/libEGL_mesa.so"
-FILES:libgl-mesa:append:tegra = " ${libdir}/libGLX_mesa.so.*"
-FILES:libgl-mesa-dev:append:tegra = " ${libdir}/libGLX_mesa.so"
-
-python __anonymous() {
-    if "tegra" not in d.getVar('OVERRIDES').split(':'):
-        return
-    pkgconfig = (d.getVar('PACKAGECONFIG') or '').split();
-    for p in (("egl", "libegl", "libegl1"),
-              ("opengl", "libgl", "libgl1"),
-              ("gles", "libgles1", "libglesv1-cm1"),
-              ("gles", "libgles2", "libglesv2-2"),
-              ("gles", "libgles3",)):
-        if not p[0] in pkgconfig:
-            continue
-        fullp = p[1] + "-mesa"
-        d.delVar("RREPLACES:" + fullp)
-        d.delVar("RPROVIDES:" + fullp)
-        d.delVar("RCONFLICTS:" + fullp)
-
-        # For -dev, the first element is both the Debian and original name
-        fullp += "-dev"
-        d.delVar("RREPLACES:" + fullp)
-        d.delVar("RPROVIDES:" + fullp)
-        d.delVar("RCONFLICTS:" + fullp)
-}