This patch updates the 40x and Book E Debug exception handling paths to
handle kernel space debug events.  It also fixes up the in-kernel ppc32
kgdb stub to work properly.
Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>