[PATCH][Aarch64] Missing register aliases

[Nick Clifton]

Hi Michael,

> 2017-06-02  Michael Collison  <michael.collison@arm.com>
> 
> 	* gas/config/tc-aarch64.c (reg_entry_reg_names): Add IP0,
> 	IP1, FP, and LR as register aliases of register 16, 17, 29
> 	and 30 respectively.
> 	* gas/testsuite/gas/aarch64/diagnostic.l: Remove diagnostic
> 	prohibiting register 'lr' which is now an alias.
> 	* gas/testsuite/gas/aarch64/diagnostic.s: Remove instruction
> 	utilizing register 'lr' which is now an alias.

Approved - please apply.

Cheers
  Nick