x11vnc: needs libXt

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/x11vnc/Config.in

@@ -1,5 +1,6 @@
 config BR2_PACKAGE_X11VNC
 	bool "x11vnc"
 	depends on BR2_PACKAGE_XORG7
+	select BR2_PACKAGE_XLIB_LIBXT
 	help
 	  VNC server for X11 display

package/x11vnc/x11vnc.mk

@@ -12,6 +12,6 @@ X11VNC_INSTALL_TARGET = YES
 X11VNC_CONF_OPT = \
 	--without-avahi
 
-X11VNC_DEPENDENCIES = xserver_xorg-server
+X11VNC_DEPENDENCIES = xserver_xorg-server xlib_libXt
 
 $(eval $(call AUTOTARGETS,package,x11vnc))