coresight: cti: Add snapshot of Coresight CTI driver

This is a snapshot of the coresight-cti driver as of msm-4.9
commit '11b572c36aa87d0fc208892840d20cd24719a4fa'. Fix unbalanced
PM runtime calls. Vote for the CTI device to be turned off when
we reset the device in order to save power.

Change-Id: I2596a77f0df7b36c47a11800b3b922c014f81ed7
Signed-off-by: Rama Aparna Mallavarapu <aparnam@codeaurora.org>