Checking in ncr read/write updates to access pciesrio SERDES registers via apb2ser block

Signed-off-by: SangeethaRao <sangeetha.rao@lsi.com>
Checking in AXM5500 pcie speed change and BZ41839 workarounds for PEI0 RC x4

Signed-off-by: SangeethaRao <sangeetha.rao@lsi.com>
Switch parameter handling to a seperate file.  3400/2500/3500
still use the older, 1K, parameter file.  The new file for
5500 will be 4K to support memory retention.  This common
interface will support both transparently.

Signed-off-by: John Jacques <john.jacques@lsi.com>