evas: Fix dangling references with input devices

evas: Fix dangling references with input devices

This solves issues with efl_input_dup() which didn't properly give a
reference to the caller, resulting in dangling eo ids.

Note: This may trigger leaks (instead of invalid refs), but this now
actually reflects the meaning of @owned. This should work with bindings
and C API users should know to call efl_unref().

This patch is the reason for the previous improvements on eo_debug.

@fix