coresight: tmc: Remove smmu initialization

SMMU initialization is not required to be done in client
probe process. SMMU framework takes care of creating
domain and attaching device. Remove related code from
tmc driver.

Change-Id: If72b2d6b4929d358c2d2e46437b8a4c882a8ef04
Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org>