parport: add "aspo" hotpluggable adapter config

This adds a new adapter config.

Design files are available from:

http://turkos.aspodata.se/git/openhw/isp/pp_jtag_arm20.sch
http://turkos.aspodata.se/git/openhw/isp/pp_jtag_arm20.pcb

No need to document it anywhere as only a single device was ever
built.

Change-Id: If031fdb9dedb1e544401747bfb7fbc5afc4d5407
Signed-off-by: Karl Hammar <karl@aspodata.se>
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/2094
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>

src/jtag/drivers/parport.c

@@ -95,6 +95,7 @@ static struct cable cables[] = {
 	SOFT TDI - Target SRST
 */
 	{ "altium",			0x10, 0x20, 0x04, 0x02, 0x01, 0x80, 0x00, 0x00, 0x10, 0x00, 0x08 },
+	{ "aspo",                       0x10, 0x01, 0x04, 0x08, 0x02, 0x10, 0x17, 0x00, 0x17, 0x17, 0x00 },
 	{ NULL,				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }
 };