[POWERPC] 83xx: Fix 2nd UCC entry in mpc832x_mds.dts

correct the reg property, remove duplicate io port entry, whitespace fixes.

Thanks to Peter Van Ackeren for pointing this out.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>