qt5: enable jscore/qt5declarative support for aarch64
Fixes [1] (as suggested by JD Conley <jd.conley@gmail.com>).
[1] https://bugs.busybox.net/show_bug.cgi?id=10541
Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>