MesaLib: split libwayland-egl into its own subpkg.

srcpkgs/MesaLib/template

@@ -1,7 +1,7 @@
 # Template build file for 'MesaLib'.
 pkgname=MesaLib
 version=9.0.1
-revision=3
+revision=4
 wrksrc="Mesa-${version}"
 build_style=gnu-configure
 configure_args="--enable-glx-tls --enable-shared-glapi --enable-gallium-g3dvl
@@ -35,7 +35,7 @@ makedepends="automake perl flex pkg-config glproto dri2proto>=2.1 makedepend
 
 subpackages="libgbm libEGL libglapi libGLES libGL libOpenVG libOSMesa
  MesaLib-devel mesa-ati-dri mesa-intel-dri mesa-nouveau-dri mesa-swraster-dri
- mesa-vmwgfx-dri"
+ mesa-vmwgfx-dri libwayland-egl"
 
 pre_configure() {
 	./autogen.sh