below are as requested my drivers/char/ cleanups in one big patch for
better merging.

Each of the patches included was already sent three times without any
objections to linux-kernel.

The n_tty.c patch is
Approved-by: Alan Cox <alan@redhat.com>

The patch below makes changes under drivers/char/ including the
following:
- make needlessly global code static
- remove completely unused code
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>