target/board: Add Ampere QS|MQ config files

target/board: Add Ampere QS|MQ config files

Add Ampere Altra ("Quicksilver") and Ampere Altra Max ("Mystique")
target/board configuration files.

The target configuration file supports silicon and emulation.
The board configuration files support 1 and 2 socket platforms.

Tested on Ampere emulation and silicon

Change-Id: I036c798a50624e30ab51ccd2895b6f60c40be096
Signed-off-by: Daniel Goehring <dgoehrin@os.amperecomputing.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/5591
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Tested-by: jenkins