xdotool: needs MMU support

Fixes:
http://autobuild.buildroot.net/results/d750919a0d5cfb624937c72253651a431212e238

Signed-off-by: Erico Nunes <nunes.erico@gmail.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/xdotool/Config.in

@@ -1,6 +1,7 @@
 config BR2_PACKAGE_XDOTOOL
 	bool "xdotool"
 	depends on BR2_PACKAGE_XORG7
+	depends on BR2_USE_MMU # fork()
 	select BR2_PACKAGE_XLIB_LIBXTST
 	select BR2_PACKAGE_XLIB_LIBXINERAMA
 	select BR2_PACKAGE_LIBXKBCOMMON