[PATCH, ld, Aarch64] Fix name of aarch64 reloc test to match reloc number

[Nick Clifton]

Hi Thomas,

> 2015-07-10  Thomas Preud'homme <thomas.preudhomme@arm.com>
>
>          * ld-aarch64/aarch64-elf.exp: Rename relocs-257-symbolic-func to
>          relocs-1027-symbolic-func.
>          * ld-aarch64/relocs-257-symbolic-func.d: Rename to ...
>          * ld-aarch64/relocs-1027-symbolic-func.d: ... this.
>          * ld-aarch64/relocs-257-symbolic-func.s: Rename to ...
>          * ld-aarch64/relocs-1027-symbolic-func.s: ... this.

Approved - please apply.  Sorry for the delay in reviewing.

Cheers
   Nick