msm: adsprpc: add traces for context allocation, free and complete

Enable event logging for context allocation, free and complete
using ftrace.

Change-Id: I9d65b16460e12e785c2a18b73490462da8bf145f
Acked-by: Thyagarajan Venkatanarayanan <venkatan@qti.qualcomm.com>
Signed-off-by: c_mtharu <mtharu@codeaurora.org>