[PATCH] Support APSR_nzcv as operand for Thumb2 mrc

[Tim Northover]

> Just revisiting this older patch. Truth be told, "pc" usage for these
> instructions
> is pre-UAL syntax. We had discussed on a different thread that we should not
> add pre-UAL support unless there is a general decision to support it.
>
> I propose to not accept PC at all as an operand. There already is a register
> class containing APSR and I updated the patch to remove PC from the list.
> This takes effect over both ARM and Thumb.

That patch LGTM.

Tim.