uboot-imx

Remove #undef DEBUG from MPC83xx board header files

Remove the "#undef DEBUG" line from all Freescale 83xx board header files.
The inclusion of this line makes it impossible to enable debug code in
other source files, because "#define DEBUG" typically needs to be defined
before any header files are included.

Signed-off-by: Timur Tabi <timur@freescale.com>