Configure the LED to be off by default, blink on activity.
Change-Id: I8515ee66c49bddf866268b85811be15c2dbc086c
Signed-off-by: Anton Kuzmin <anton.kuzmin@cs.fau.de>
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/2539
Tested-by: jenkins