cherry pick from r306197:
  Nvidia Tegra 124 and Jetson TK1 related DTS.
r306327:
  Update AHCI driver to match new dts tree
r306328:
  Update PCI driver to match new dts tree
r308390:
  Rework NVIDIA Tegra124 XUSBPAD driver.
   - Adapt it for new, incompatible, DT bindings introduced by r306197.  -
   Add support for USB super speed pads/ports.
r308391:
  Add NVIDIA Tegra XHCI driver and coresponding firmware blob.
r310600:
  Implement drivers for NVIDIA tegra124 display controller, HDMI source and
  host1x module. Unfortunately, tegra124 SoC doesn't have 2D acceleration
  engine and 3D requires not yet started nouveau driver.
r314703:
  Add support for card detect and write protect gpio pins to Tegra SDHCI.