[PATCH] make a few variables static

[Nick Clifton]

Hi Trev,

> 2016-04-13  Trevor Saunders  <tbsaunde+binutils@tbsaunde.org>
> 
> 	* config/tc-nios2.c (nios2_as_options): Make file static.
> 	* config/tc-ppc.c (toc_reloc_ypes): Likewise.
> 	* config/tc-sparc.c (native_op_table): Likewise.
 
Approved - please apply.

Cheers
  Nick