Move diplomacy to standalone library absorbing aop

Updates the diplomacy dependency submodule to track
chipsalliance/diplomacy master branch.

Delete SFC RegisteredLibrary file

Resolves #3579.

Support pulling out full imul response

Splits out the aop and diplomacy modules into a standalone
library. Adds the new library as a dependency and updates the
in-tree diplomacy and aop modules to reference the new library with
deprecation warnings.

Add slave node to RoCC

FIFOFixer should be identity when no clients may request Fifo

Purge xbus in BaseSubsystem

Prepare to purge resource API

remove depending on explicit SBUS

Use sortedSlaves in some TL helpers

Fix AXI4 Xbar elaboration error due to missing fields

Resolves https://github.com/chipsalliance/rocket-chip/issues/3548.

Modularize PMA-checking functionality

Fence for RoCC on rocc-csr writes

Add hardware debug ROB

Remove deprecated RegisterRouter APIs

Sync master into dev

Co-authored-by: Jerry Zhao <qwertyuiopghb@gmail.com>

Co-authored-by: Jerry Zhao <qwertyuiopghb@gmail.com>

Fix build.