I don't think you can. HOME button is a special button for Android. For example, there is no message sending out from the Android system when it is pressed. I read it on Stackoverflow that it was designed by Google to prevent any apps from preventing user going to the home screen. From user point of view, I don't think it makes sense to hang up phone with home button. So for example, when you are making a call, and you want to check a note that you wrote down in a note, you can press home and open up the note app without hanging up the call. So I don't think it is a good idea to hang up phone by the home button.
