Backport fix for binutils 11867: .quad directive not assembled correctly

Alan Modra (and Alan's employer) graciously permitted use of his patch
under GPLv2.

Obtained from:	OpenBSD
MFC after:	5 days


git-svn-id: svn+ssh://svn.freebsd.org/base/head@276229 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f