This makes it possible to debug kernel over FireWire without the need to
recompile it.

[Stefan R: changed description from "...0" to "...N"]

Cc: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: NLubomir Rintel <lkundrak@v3.sk>
Signed-off-by: NStefan Richter <stefanr@s5r6.in-berlin.de>