[Bug target/58446] Support for musl libc

[gcc-bug-espfv4bhi9 at gregor dot im]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58446

Gregor Richards <gcc-bug-espfv4bhi9 at gregor dot im> changed:

           What    |Removed                     |Added
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  Attachment #30834|0                           |1
        is obsolete|                            |

--- Comment #13 from Gregor Richards <gcc-bug-espfv4bhi9 at gregor dot im> ---
Created attachment 30865
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30865&action=edit
arm support for musl

This change to arm.diff adds support for musl's -eb and -hf linkers
(/lib/ld-musl-arm[eb][hf].so.1)