Adds PPC32 RIO support.  Init code for the MPC85xx RIO ports and glue for the
STx GP3 board to use it.
Signed-off-by: NMatt Porter <mporter@kernel.crashing.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>