binutils/binutils: ensure gold is staticaly-linked if needed

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from 293d8334b913a86c3e5d817dd84e5bc434888251)

 reporter_name="Remy Bohmer"

 reporter_url="linux@bohmer.net"

 reporter_comment="Example for building a toolchain for m68000 bare metal targets"