libglvnd: pull in libEGL and libGLX ICDs

In order to function, libglvnd requires vendor-provided Installable
Client Drivers for libEGL and libGLX. RRECOMMEND corresponding virtual
packages in order to pull default implementation for the target
platform.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-graphics/libglvnd/libglvnd_1.7.0.bb

@@ -22,8 +22,8 @@ PACKAGECONFIG ?= "\
   "
 
 PACKAGECONFIG[x11] = "-Dx11=enabled,-Dx11=disabled,libx11 libxext xorgproto"
-PACKAGECONFIG[glx] = "-Dglx=enabled,-Dglx=disabled,libx11 libxext xorgproto"
-PACKAGECONFIG[egl] = "-Degl=true,-Degl=false,"
+PACKAGECONFIG[glx] = "-Dglx=enabled,-Dglx=disabled,libx11 libxext xorgproto,,libglx-icd"
+PACKAGECONFIG[egl] = "-Degl=true,-Degl=false,,libegl-icd"
 PACKAGECONFIG[gles1] = "-Dgles1=true,-Dgles1=false,"
 PACKAGECONFIG[gles2] = "-Dgles2=true,-Dgles2=false,"