Input: rename cap1106 driver to cap11xx

There are several devices in cap11xx family besides cap1106. The driver can
be made to support all of them, so let's give it more generic name.

Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Reviewed-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>