Add tcl configurations for Altera Soc devices

Add tcl configurations for Altera Soc devices

This commit adds two tcl configuration files, one for the Altera
Cyclone V SoC series, and one for the SoCkit development board.
The board configuration is able to halt and resume the cpu cores,
and dump register contents etc.  It has not been fully tested, however.

Change-Id: Id3f18c3408975cf986a5f5aec410b5b13240c35e
Signed-off-by: Brad Riensche <brad.riensche@gmail.com>
Reviewed-on: http://openocd.zylin.com/1494
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>