arm:perform copy operation using same cacheability.
arm:perform copy operation using same cacheability.

When copying data from cacheable memory also use cacheable
attributes when creating temporary mappings.

Change-Id: I0e8380293fb4edaafba49f6262983ad86a5350c5

veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi