package/gstreamer1/gst1-plugins-base: add tools option
Add tools option to disable building/installing of gst-discoverer,
gst-device-monitor and gst-play command line tools (similar to
BR2_PACKAGE_GSTREAMER1_INSTALL_TOOLS).
Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>