soc: qcom: Service locator for kernel clients

Add a library that retrieves location information given a service
identifier. Location here translates to what process domain
exports the service, and which subsystem that process executes on.

Change-Id: Ia5d76ea4de29dbafe309a831f8a2418c058cba94
Signed-off-by: Pushkar Joshi <pushkarj@codeaurora.org>