The unit address of the second PCIe instance
is set to be same as that of the first instance
(copy-paste error).

Fix it.
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: NSekhar Nori <nsekhar@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>