gstreamer1.0-plugins-good: on wayland qt5 needs qtwayland

The code in ext/qt/meson.build looks for the Qt5WaylandClient pkg-config file.
Without this module, qmlglsink will not work with Wayland.
This can be tested by checking whether or not HAVE_QT_WAYLAND has
been added to the cflags in the autogenerated ninja file.

Writen by:
Carlos Rafael Giani
https://lists.openembedded.org/g/openembedded-core/message/143574



Signed-off-by: Jose Quaresma <quaresma.jose@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>