The XDS110 stand-alone version has the ability to supply
voltage to the target board via it's AUX FUNCTIONS port.
Added command to enable setting the voltage on the XDS110
stand-alone.
Change-Id: I2f21c4a3d15ed99e649f3a83973c5e724c4bfeb6
Signed-off-by: Edward Fewell <efewell@ti.com>
Reviewed-on: http://openocd.zylin.com/4793
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>