[POWERPC] 83xx: mpc834x_mds - Convert device tree source to dts-v1

Move mpc834x_mds device tree source forward to dts-v1 format.  Nothing
too complex in this one, so it boils down to just adding a bunch of 0x
in the right places and converting clock speeds to decimal.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>