h264_omx can't be used with HomeBridge image
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**Describe The Bug:**
<!-- A clear and concise description of what the bug is. -->
FFMpeg throws an Error when using h264_omx
**To Reproduce:**
<!-- Steps to reproduce the behavior. -->

run the following command in shell
```
ffmpeg -re -f video4linux2 -video_size 1920x1080 -i /dev/video0 -c:v h264_omx -f rtsp -rtsp_transport tcp rtsp://localhost:8554/live.stream 
```

**Expected behavior:**
<!-- A clear and concise description of what you expected to happen. -->

It should stream to the RTSP server.

**Logs:**

```
➜  ~  ffmpeg -re -f video4linux2 -video_size 1920x1080 -i /dev/video0 -c:v h264_omx -f rtsp -rtsp_transport tcp rtsp://localhost:8554/live.stream 
ffmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 6.3.0 (Raspbian 6.3.0-18+rpi1+deb9u1) 20170516
  configuration: --pkgconfigdir=/build/workspace/lib/pkgconfig --prefix=/build/workspace --pkg-config-flags=--static --extra-cflags=-I/build/workspace/include --extra-ldflags=-L/build/workspace/lib --extra-libs='-lpthread -lm' --enable-static --disable-debug --disable-shared --disable-ffplay --disable-doc --enable-openssl --enable-gpl --enable-version3 --enable-nonfree --enable-pthreads --enable-libvpx --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libx264 --enable-runtime-cpudetect --enable-libfdk-aac --enable-avfilter --enable-libopencore_amrwb --enable-libopencore_amrnb --enable-filters --enable-decoder=h264 --enable-network --enable-protocol=tcp --enable-libspeex --enable-demuxer=rtsp --enable-omx-rpi --enable-mmal --enable-indev=alsa --enable-outdev=alsa
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, video4linux2,v4l2, from '/dev/video0':
  Duration: N/A, start: 10363.538080, bitrate: 165888 kb/s
    Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 1920x1080, 165888 kb/s, 5 fps, 5 tbr, 1000k tbn, 1000k tbc
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (h264_omx))
Press [q] to stop, [?] for help
[h264_omx @ 0x2c08ab0] /opt/vc/lib/libbcm_host.so not found
Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
Conversion failed!
```

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

* **Homebridge Raspberry Pi Image Version**: 1.0.30
* **Node.js Version**: <!-- node -v --> v16.14.0
* **NPM Version**: <!-- npm -v --> 8.5.1
* **Homebridge Version**: <!-- homebridge -V --> 1.4.0
* **Homebridge Config UI X Plugin Version**: <!-- hb-service -v --> v4.43.0

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