[PATCH] aarch64: Fix bogus type punning in parse_barrier() [PR26699]

[Nick Clifton]

Hi Alex,

> OK for master and backport to binutils-2.35?

Approved - please apply - both locations.

Cheers
  Nick

> gas/ChangeLog:
> 2020-10-06  Alex Coplan  <alex.coplan@arm.com>
> 
> 	* config/tc-aarch64.c (asm_barrier_opt): Delete.
> 	(parse_barrier): Fix bogus type punning.
> 	* testsuite/gas/aarch64/system.d: Update disassembly.
> 	* testsuite/gas/aarch64/system.s: Add isb sy test.
>