[PATCH] Add command to erase all flash memory regions

[Eli Zaretskii]

> From: Luis Machado <lgustavo@codesourcery.com>
> Date: Fri, 6 Jan 2017 10:41:41 -0600
> 
> 2017-01-05  Mike Wrighton  <mike_wrighton@codesourcery.com>
> 	    Luis Machado  <lgustavo@codesourcery.com>
> 
> 	* gdb.texinfo (-target-flash-erase): New MI command description.
> 	(flash-erase): New CLI command description.

This part is OK, but I think this warrants a NEWS entry.

Thanks.