msm: clock-8092: add clock entry for coresight etm

Add mapping for the clock for all the ETM components so that
the CoreSight ETM driver can operate on and manage the clock
for those.

Change-Id: I06cce87bb748f8bdbae5883803530aceaa7ef2a3
Signed-off-by: Vignesh Radhakrishnan <vigneshr@codeaurora.org>