[PATCH] ppc32: Fix typo in setup of 2nd PCI bus on 85xx

Typo bug that was using PCI1 defines instead of PCI2 when setting up the
second PCI bus controller on 85xx based systems.  This hasn't been a real
issue since currently the PCI2 sizes are the same as the PCI1 sizes for
currently supported boards.

Thanks to Andrew Klossner @ Xerox for point this out.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>