mesa: drop .so files for GLVND ICD libraries

If GLVND is enabled, Mesa provides two ICD libaries, libEGL_mesa.so.0
and libGLX_mesa.so.0. During the installation it also creates two extra
symlinks, libEGL_mesa.so and libGLX_mesa.so, however those symliks are
unnecessary and useless as nothing will ever link to those ICD archives.
Remove them from the install dir, which also makes package
libglx-mesa-dev disappear (it contained only this symlink).

(From OE-Core rev: badb1ee13ec87923aa6c4cdeb90756cc370e10bc)

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-graphics/mesa/mesa.inc

@@ -33,6 +33,10 @@ do_install:append() {
   if ${@bb.utils.contains('PACKAGECONFIG', 'egl', 'true', 'false', d)} && [ -f ${D}${includedir}/EGL/eglplatform.h ]; then
       sed -i -e 's/^#elif defined(__unix__) && defined(EGL_NO_X11)$/#elif defined(__unix__) \&\& defined(EGL_NO_X11) || ${@bb.utils.contains('PACKAGECONFIG', 'x11', '0', '1', d)}/' ${D}${includedir}/EGL/eglplatform.h
   fi
+  # These are ICDs, apps are not supposed to link against them                                                                                                              
+  if ${@bb.utils.contains('PACKAGECONFIG', 'glvnd', 'true', 'false', d)} ; then                                                                                             
+      rm -f ${D}${libdir}/libEGL_mesa.so ${D}${libdir}/libGLX_mesa.so                                                                                                       
+  fi
 }
 
 DEPENDS = "expat makedepend-native flex-native bison-native libxml2-native zlib chrpath-replacement-native python3-mako-native gettext-native python3-pyyaml-native"
@@ -347,7 +351,6 @@ FILES:${PN}-dev = "${libdir}/pkgconfig/dri.pc ${includedir}/vulkan ${libdir}/vdp
 FILES:libegl-mesa-dev = "${libdir}/libEGL*.* ${includedir}/EGL ${includedir}/KHR ${libdir}/pkgconfig/egl.pc"
 FILES:libgbm-dev = "${libdir}/libgbm.* ${libdir}/pkgconfig/gbm.pc ${includedir}/gbm.h ${includedir}/gbm_backend_abi.h"
 FILES:libgl-mesa-dev = "${libdir}/libGL.* ${includedir}/GL ${libdir}/pkgconfig/gl.pc"
-FILES:libglx-mesa-dev = "${libdir}/libGLX*.*"
 FILES:libglapi-dev = "${libdir}/libglapi.*"
 FILES:libgles1-mesa-dev = "${libdir}/libGLESv1*.* ${includedir}/GLES ${libdir}/pkgconfig/glesv1*.pc"
 FILES:libgles2-mesa-dev = "${libdir}/libGLESv2.* ${includedir}/GLES2 ${includedir}/GLES3 ${libdir}/pkgconfig/glesv2.pc"