MFC 263250, 263251, 263424, 263425, 263426, 263427, 263430, 263431

MFC 263250, 263251, 263424, 263425, 263426, 263427, 263430, 263431

  Use the same cache terminology as the ARM docs in comments. No
  functional changes.

  Use armv7 TLB flush code, not arm11, for cortex-a processors.

  Exynos/ Arndale...
  - Disable debugging by default.
  - Add display-related and clk devices to the tree
  - Prevent resources intersection with EHCI driver
  - Add display-related and clk devices to the tree
  - Prevent resources intersection with EHCI driver
  - Add driver for Display Controller.
  - Add support for Samsung Chromebook (ARM Cortex A15 machine).
  - Rename mct and ehci drivers files to match common naming.