xvkbd: add missing dependency on xlib_libXtst

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/xvkbd/Config.in

@@ -2,6 +2,7 @@ config BR2_PACKAGE_XVKBD
 	bool "xvkbd"
 	depends on BR2_PACKAGE_XORG7
 	select BR2_PACKAGE_XLIB_LIBXAW
+	select BR2_PACKAGE_XLIB_LIBXTST
 	help
 	  on-screen keyboard for X
 

package/xvkbd/xvkbd.mk

@@ -15,7 +15,7 @@ XVKBD_MAKE_OPT = CC="$(TARGET_CC)" CXX="$(TARGET_CXX)" LD="$(TARGET_CC)" \
 
 XVKBD_INSTALL_TARGET_OPT = DESTDIR=$(TARGET_DIR) install
 
-XVKBD_DEPENDENCIES = xserver_xorg-server xlib_libXaw
+XVKBD_DEPENDENCIES = xserver_xorg-server xlib_libXaw xlib_libXtst
 
 $(eval $(call AUTOTARGETS,package,xvkbd))