Add missing input name and set up parent devices so input devices will
show in proper places in sysfs tree.
Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Tested-by: NJean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>