efl_ecore_input_device: unify efl_ecore_input_device in efl_input_device.

efl_ecore_input_device: unify efl_ecore_input_device in efl_input_device.

Efl_Ecore_Input_Device was introduced wrongly in merging upstream efl.

First, conceptually, efl interface should not allow Ecore.
This is totally wrong in interface design.

Second, Efl_Ecore_Input_Device conceptually same with Efl_Input_Device.
We don't need both interfaces. Even their bodies are perfectly same.

Third, EFl_Ecore_Input_Device is not compatible with Efl_Input_Device,
Whole Events in efl will be passing through with Efl_Input_Device interface,
but their classes are different, Eo will fault in type checking,
Efl_Ecore_Input_Device(or Ecore_Device) won't be passed properly.

All in all, current Efl_Ecore_Input_Device just breaks system and useless.

Change-Id: I276761e67d598457087bd2e3e06f44e58161427f