[autoconf] Fix missing dependency.

configure.ac

@@ -145,7 +145,7 @@ NK_INIT([bindings xdg-theme])
 PKG_CHECK_MODULES([glib],     [glib-2.0 >= ${glib_min_version} gio-unix-2.0 gmodule-2.0])
 AC_DEFINE_UNQUOTED([GLIB_VERSION_MIN_REQUIRED], [(G_ENCODE_VERSION(${glib_min_major},${glib_min_minor}))], [The lower GLib version supported])
 AC_DEFINE_UNQUOTED([GLIB_VERSION_MAX_ALLOWED], [(G_ENCODE_VERSION(${glib_min_major},${glib_min_minor}))], [The highest GLib version supported])
-GW_CHECK_XCB([xcb-aux xcb-xkb xkbcommon xkbcommon-x11 xcb-ewmh xcb-icccm xcb-cursor xcb-randr xcb-xinerama ])
+GW_CHECK_XCB([xcb-aux xcb-xkb xkbcommon xkbcommon-x11 xcb-ewmh xcb-icccm xcb-cursor xcb-randr xcb-xinerama xcb-keysyms ])
 
 
 AC_ARG_ENABLE([imdkit], AS_HELP_STRING([--enable-imdkit], [Build with checks using check library (default: disabled)]))