Add support for the ARM DesignStart DAPLink board for Digilent Arty
S7/A7 (V2C DAPLink) shield.
This shield is designed to be used along with the ARM Cortex-M1/M3
DesignStart FPGA reference designs running on the Digilent Arty.
Signed-off-by: Henrik Brix Andersen <henrik@brixandersen.dk>