[PATCH] [ARC] Add XY registers, update neg instruction.

[Nick Clifton]

Hi Claudiu,

> gas/
> 2016-05-19  Claudiu Zissulescu  <claziss@synopsys.com>
> 
> 	* config/tc-arc.c (md_begin): Add XY registers.
> 	(cpu_types): Code density is default off for ARC EM.
> 
> opcodes/
> 2016-05-19  Claudiu Zissulescu  <claziss@synopsys.com>
> 
> 	* arc-tbl.h (neg): New instruction variant.
 
Approved - please apply.

Cheers
  Nick