With the new TEGRA_MC driver and driver structure, move the TEGRA124_EMC driver into the tegra subdirectory. Also fixup the Makefile's and Kconfigs so that it can still be selectively enabled for either Tegra124 or Tegra132. BUG=chrome-os-partner:30851 TEST=booted to login screen, verified that the emc scaling driver had loaded and memory was running at the highest speed. Change-Id: Ia3738d0f96465a7cd155869b461fd240c1fb3660 Signed-off-by: Rhyland Klein <rklein@nvidia.com> Reviewed-on: https://chromium-review.googlesource.com/225084 Reviewed-by: Olof Johansson <olofj@chromium.org>