[PATCH][GAS][AArch64] Add new fields and operands required for Armv8.4-a [Patch (1/6)]

[Tamar Christina]

Hi Nick,

> > Ok for master?
> 
> Approved - please apply.  Now that you have write access... :-)
> 
> Cheers
>   Nick
> 
> PS.  I think that this covers all of your recent submissions, but if not, please
> let me know and I will review asap.

You seem to have missed patch 3 to 6 for aarch64 :) There were 10 in total,
3 for arm and 7 for aarch64.

Cheers,
Tamar