Improved support for Xbox 360 wireless devices by enabling rumble and

LED control, improved general usability by adding input controls, and
added a sysfs interface for tuning driver behavior. Updated with fixes
to code layout, typecasting, and use of internal functions.

[akpm@linux-foundation.org: coding-style fixes]
[randy.dunlap@oracle.com: fix build error and warnings]
Signed-off-by: Mike Murphy <mamurph@cs.clemson.edu>
Cc: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>