linux-imx

powerpc/fsl: remove extraneous DIU platform functions

The Freescale DIU driver was recently updated to not require every DIU
platform function, so now we can remove the unneeded functions from
some boards.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>