soc: qcom: Add a snapshot of Remote QDSS driver

This is the snapshot of the remote-qdss driver as of msm-4.14 commit
237363b ("Coresight: stm: Non-add data header based on diag entity ID").

Change-Id: Ia19952b47428c1940355018b53465ba866e6d21e
Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org>