package/mesa3d-demos: add dependency on libxkbcommon for wayland support

Since the bump of mesa3d-demos to version 9.0.0 in Buildroot commit
80304d9911f34f8a0173a4f37d52f93177478cc7, libxkbcommon is needed for
the wayland support. Without libxkbcommon, the build fails with:

Run-time dependency wayland-client, wayland-egl, xkbcommon found: NO (tried pkgconfig and cmake)

../output-1/build/mesa3d-demos-9.0.0/meson.build:62:14: ERROR: Dependency "wayland-client, wayland-egl, xkbcommon" not found, tried pkgconfig and cmake

Fixes:

  http://autobuild.buildroot.net/results/1c01da4966b054de9c15f0eb3d738806c7d5d315/

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
[Thomas: patch extracted from
https://patchwork.ozlabs.org/project/buildroot/patch/20230716145003.339645-2-bernd@kuhls.net/]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/mesa3d-demos/Config.in

@@ -7,6 +7,7 @@ config BR2_PACKAGE_MESA3D_DEMOS
 	select BR2_PACKAGE_LIBGLU if BR2_PACKAGE_XORG7 && BR2_PACKAGE_HAS_LIBGL
 	select BR2_PACKAGE_XLIB_LIBX11 if BR2_PACKAGE_XORG7 && BR2_PACKAGE_HAS_LIBGL
 	select BR2_PACKAGE_XLIB_LIBXEXT if BR2_PACKAGE_XORG7 && BR2_PACKAGE_HAS_LIBGL
+	select BR2_PACKAGE_LIBXKBCOMMON if BR2_PACKAGE_WAYLAND
 	help
 	  OpenGL demos from the Mesa 3D project.
 

package/mesa3d-demos/mesa3d-demos.mk

@@ -63,7 +63,7 @@ MESA3D_DEMOS_CONF_OPTS += -Dosmesa=disabled
 endif
 
 ifeq ($(BR2_PACKAGE_WAYLAND),y)
-MESA3D_DEMOS_DEPENDENCIES += wayland
+MESA3D_DEMOS_DEPENDENCIES += libxkbcommon wayland
 MESA3D_DEMOS_CONF_OPTS += -Dwayland=enabled
 else
 MESA3D_DEMOS_CONF_OPTS += -Dwayland=disabled