devicesToPublishAsAccessoriesSwitch not working as expected
**Describe the bug**

I get two switch buttons. Both default in state Powered Off.

One of them can only power off and the other can only power on.

Both have the same description (the correct name of the device).

State of the switch is not persisted.

**To Reproduce**
Steps to reproduce the behavior
"devicesToPublishAsAccessoriesSwitch": [
                "Harman Kardon AV-ontvanger"
            ],
**Expected behavior**
A clear and concise description of what you expected to happen.

I expected  toggle On/Off switch or two switches with the correct description.

**Screenshots**
If applicable, add screenshots to help explain your problem.

![afbeelding](https://user-images.githubusercontent.com/429386/98822904-ae3a8400-2431-11eb-870b-5cf08869ca23.png)

**IOS (please complete the following information):**
- Version  1.4.1
- Device: 

**Logs**
Your log in debug mode (-D option)

**Config**
Your config section of platform. Please do not post your whole config and especially with logins / passwords !

"devicesToPublishAsAccessoriesSwitch": [
                "Harman Kardon AV-ontvanger"
            ],
**Additional context**
Add any other context about the problem here.

Possibly related to #308 



