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 --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index 937ad6fe..e1f4e19 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -99,5 +99,7 @@
 
 source "drivers/staging/stlc45xx/Kconfig"
 
+source "drivers/staging/uc2322/Kconfig"
+
 endif # !STAGING_EXCLUDE_BUILD
 endif # STAGING