[binutils-gdb] sim: common: sim-arange: fix extern inline handling

[sergiodj+buildbot@redhat.com]

*** TEST RESULTS FOR COMMIT 92fc6153a6fdf2a027d9780f5945712aafad4a9e ***

Author: Mike Frysinger <vapier@gentoo.org>
Branch: master
Commit: 92fc6153a6fdf2a027d9780f5945712aafad4a9e

sim: common: sim-arange: fix extern inline handling
With newer versions of gcc (5.x), the extern inline we're using with the
sim-arange module no longer works.  Since this code really wants the gnu
inline semantics, use that attribute explicitly.

Reported-by: DJ Delorie <dj@redhat.com>
Reported-by: Joel Sherrill <joel.sherrill@oarcorp.com>