This reverts commit fd1c85d3ac2ccfec33b007399e6677b41899a888 [Why] We are not implementing the planned new HW sequence to disable HUBP. [How] Revert most related changes to minimize possibility of regression. Signed-off-by: Wesley Chalmers <Wesley.Chalmers@amd.com> Reviewed-by: Martin Leung <Martin.Leung@amd.com> Acked-by: Qingqing Zhuo <Qingqing.Zhuo@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>