[PATCH] mips/bfd/ld: Fix --as-needed on mips and update related ld tests

[Richard Sandiford]

Hi Gregory

Thanks for the patch.  It looks good.  Because the testsuite changes
are rather big, I'm afraid the copyright of the patch probably needs
to be assigned to the FSF first.  Would you be happy to sign a copyright
assignment for this and future changes?  If so, Nick (cc:ed) can send
you the right form.

Thanks,
Richard