[AArch64] Use SYMBOL_REFERENCES_LOCAL in one symbol check

[Nick Clifton]

Hi Jiong,

> bfd/
> 2017-06-15  Jiong Wang  <jiong.wang@arm.com>
> 
>          * elfnn-aarch64.c (elfNN_aarch64_final_link_relocate): Use
>          SYMBOL_REFERENCES_LOCAL.
> 
> ld/
>          * testsuite/ld-aarch64/aarch64-elf.exp: Update test name
>          * testsuite/ld-aarch64/pcrel.s: Add new testcases.
>          * testsuite/ld-aarch64/pcrel_pic_undefined.d: Update the
>          expected warnings.
>          * testsuite/ld-aarch64/pcrel_pic_defined_local.d: Rename ...
>          * testsuite/ld-aarch64/pcrel_pic_defined.d: ... to this.
>          Update expected warnings.

Approved - please apply.

Cheers
  Nick