msm: clock-samarium: add clock entry for tpiu for samarium

Add clock support for the Coresight TPIU device so that the
CoreSight TPIU driver can operate on and manage the clock
for that device.

Change-Id: If8a4316def86a662595893c053c7c58ba7b7ef1e
Signed-off-by: Aparna Das <adas@codeaurora.org>