[RFA/doco 2/4] gdb/NEWS: Document that GDB now supports DWARF-based fixed point types

[Eli Zaretskii]

> From: Joel Brobecker <brobecker@adacore.com>
> Date: Sun, 22 Nov 2020 15:56:28 +0400
> Cc: Joel Brobecker <brobecker@adacore.com>
> 
> gdb/ChangeLog:
> 
>         * NEWS: Add entry documenting support for DWARF-based fixed
>         point types.

Thanks, this is OK.