mpc83xx: Add PCI-E support for MPC8315ERDB boards

MPC8315ERDB boards features PCI-E x1 and Mini PCI-E x1 ports. Let's
support them.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
2 files changed