coresight: add tpda and tpdm driver support

Add TPDA and TPDM driver support required for trace, profiling & diagnostic
data collection and retrieval. Monitors are responsible for data set
collection and aggregators are useful for pulling the datasets from one or
more attached monitors and pushing the resultant data out.

Change-Id: I15097a62ca1c100f38409abc4bf92793e8187d70
Signed-off-by: Sarangdhar Joshi <spjoshi@codeaurora.org>