[Bug target/78117] gcc on tilegx builds faulty strstr() function (from glibc)

[hgb at ifi dot uio.no]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78117

--- Comment #7 from Henrik Grindal Bakken <hgb at ifi dot uio.no> ---
We received a patch from Mellanox ages ago which fixed the issue (at least for
us).  I'll attach the patch.