First pull request of Versatile family clean-ups for v3.17:

- Remove <mach/memory.h> from the Integrator, paving the
  road for multiplatform.
- Push the CLCD helper code down into the framebuffer subsystem,
  removing the last hook in plat-versatile for the Integrator,
  also paving the road for multiplatform.

Patches tested on Integrator/AP, Integrator/CP and Versatile AB
(all real hardware).
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