Cleanup to drop support for legacy Tegra clocks.

Bug 1934094

Change-Id: Ifce57363ff4474f24587d336c84e360596e22f9b
Signed-off-by: Chris Dragan <kdragan@nvidia.com>
Reviewed-on: http://git-master/r/1494043
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Timo Alho <talho@nvidia.com>

* copy driver sources from kernel-4.4 repository
* sync with copy in Perforce
* fix several formatting errors
* fix issues reported by Coverity

Bug 200295104

Change-Id: I0a37cd12041d8fdcafb72b2e67d1a9234320e11b
Signed-off-by: Chris Dragan <kdragan@nvidia.com>
Reviewed-on: http://git-master/r/1487057
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Reviewed-by: Vivek Aseeja <vaseeja@nvidia.com>
Reviewed-by: Kiran Kasamsetty <kkasamsetty@nvidia.com>