Will not boot without HDMI attached Zero W.
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**Describe The Bug:**
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Will not boot up headless! Raspberry Zero W

**To Reproduce:**
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Unplug HDMI and power up.

**Expected behavior:**
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It would boot and i could ssh or acces the web ui.
**Logs:**

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**Screenshots:**
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**Environment:**

* **Homebridge Raspberry Pi Image Version**:https://github.com/homebridge/homebridge-raspbian-image
* **Node.js Version**: <!-- node -v -->v14.15.1
* **NPM Version**: <!-- npm -v -->6.14.9
* **Homebridge Version**: <!-- homebridge -V -->1.1.6
* **Homebridge Config UI X Plugin Version**: <!-- hb-service -v -->v4.35.0


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