[PATCH] ppc32: Fix MPC52xx PCI init in cas the bootloader didn't do it

We were counting on the bootloader to init some stuff, like get the bus out of
reset and enable accesses.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>