Split input documentation into several groups: kernel- and user-facing, and
notes about individual device drivers. Move device drivers docs into a
separate subdirectory.
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Consolidate use instructions and userspace API notes into the same chapter;
remove completely obsolete references, move into a separate subdirectory.
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

This is just a part of kernel documentation, it does not require explicit
license notice.
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Move the documentation for Amiga CD32 together with other parallel port
joysticks.
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Now that all files under Documentation/input follows the ReST markup
language, rename them to *.rst and create a book for the Linux Input
subsystem.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>