Add --enable-install-libiberty to HOST_BINUTILS_CONF_OPTS to allow
prelink-cross to build properly.
Signed-off-by: Adam Duskett <Aduskett@gmail.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>