This was done in the 32-bit AVP loader (SPL) but is
board-specific so should be moved to the CPU portion.
Signed-off-by: NTom Warren <twarren@nvidia.com>
Acked-by: NStephen Warren <swarren@nvidia.com>

Based on Venice2, incorporates Stephen Warren's
latest P2571 pinmux table.

With Thierry Reding's 64-bit build fixes, this
will build and and boot in 64-bit on my P2571
(when used with a 32-bit AVP loader).
Signed-off-by: NTom Warren <twarren@nvidia.com>