Staging: add aten2011 usb to serial converter driver.

Many thanks to Russell Lang <gsview@ghostgum.com.au> for his
help in getting this working on newer kernel versions and
for pointing out this driver in the first place.

Cc: Russell Lang <gsview@ghostgum.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --cc drivers/staging/Kconfig
Simple merge

diff --cc drivers/staging/Makefile
Simple merge

diff --cc drivers/staging/uc2322/Kconfig
Simple merge

diff --cc drivers/staging/uc2322/Makefile
Simple merge

diff --cc drivers/staging/uc2322/TODO
Simple merge

diff --cc drivers/staging/uc2322/aten2011.c
Simple merge

diff --cc drivers/staging/uc2322/aten2011.h
Simple merge

diff --cc drivers/staging/uc2322/aten2011_16C50.h
Simple merge