product/rdn2: add configuration data for AP context module

AP context module is used to zero out the shared memory region used by
SCP and AP on every initializaion or interconnect reset. Provide the
base address and size of the shared memory region and also the clock id
of the interconnect to subscribe to.

Change-Id: I7372af0cdbff7ea49f6b8d4979343ad3fbd6356a
Signed-off-by: Aditya Angadi <aditya.angadi@arm.com>