powerpc/85xx: Update setting of SRIO LIODNs

Properly set the LIODN values associated with SRIO controller.  On
P4080/P3060 we have an LIODN per port and one for the RMU.  On
P2041/P3041/P5020 we have 2 LIODNs per port.

Update the tables for all of these devices to properly handle both
styles.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>