meson: yield xwayland option

meson_options.txt

@@ -3,7 +3,7 @@ option('logind', type: 'feature', value: 'auto', description: 'Enable support fo
 option('logind-provider', type: 'combo', choices: ['systemd', 'elogind'], value: 'systemd', description: 'Provider of logind support library')
 option('xcb-errors', type: 'feature', value: 'auto', description: 'Use xcb-errors util library')
 option('xcb-icccm', type: 'feature', value: 'auto', description: 'Use xcb-icccm util library')
-option('xwayland', type: 'feature', value: 'auto', description: 'Enable support for X11 applications')
+option('xwayland', type: 'feature', value: 'auto', yield: true, description: 'Enable support for X11 applications')
 option('x11-backend', type: 'feature', value: 'auto', description: 'Enable X11 backend')
 option('rootston', type: 'boolean', value: true, description: 'Build the rootston example compositor')
 option('examples', type: 'boolean', value: true, description: 'Build example applications')