Fix for deprecated Raspberry Pi OS Lite (Legacy)

The Debian Buster based legacy RPi OS has been deprecarted and some packages
have been switched from RPi-patched versions to upstream Debian version.

This also affects VLC, which now misses OpenMAX hardware acceleration on the RPi.
This patch works around the issue by installing and version-pinning the previous
patched RPi version of VLC.

package/install

@@ -15,9 +15,18 @@ apt install --no-install-recommends -y \
   pulseaudio \
   pulseaudio-utils \
   pavucontrol \
-  vlc \
+  vlc=3.0.17.4-0+deb10u2+rpt1 \
+  vlc-bin=3.0.17.4-0+deb10u2+rpt1 \
+  libvlc-bin=3.0.17.4-0+deb10u2+rpt1 \
+  vlc-plugin-base=3.0.17.4-0+deb10u2+rpt1 \
+  vlc-data=3.0.17.4-0+deb10u2+rpt1 \
+  vlc-plugin-qt=3.0.17.4-0+deb10u2+rpt1 \
+  vlc-plugin-video-output=3.0.17.4-0+deb10u2+rpt1 \
   '' # dummy entry to terminate the list
 
+# Pin VLC version
+apt-mark hold vlc
+
 # Disable overscan and raise GPU memory
 cat >> /boot/config.txt << EOF
 [all]

package/run

@@ -48,6 +48,7 @@ VLC_OPTS=(
   "--logfile=/MEDIA/log.txt"
   "--playlist-tree"
   "--no-osd"
+  "--vout=mmal_vout"
   "--mmal-layer=1"
   "--fullscreen"
   "--loop"