fix(rdn2): add LCA multichip data for RD-N2-Cfg2

This patch adds the routing table addresses required for LCA
enablement on RD-N2-Cfg2. CMN on rdn2cfg2 uses AXI Stream IDs
to route LCA connections to the correct downstream tx_cxs_a4s
port. The data programmed in the routing table are the A4SIDs
of each chip.

Signed-off-by: Jerry Wang <Jerry.Wang4@arm.com>
Change-Id: I46e558f3be7f0d51b768b7c5586f15e6bc517f3a