staging: vt6656: int.c: Put comment about DEBUG print define on same line as code

A small comment at the end of the line, mentioning the debug level, is
enough - no need to repeat the entire line of code just for that.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>