Enable etnaviv in libdrm Debian package
Needed for the devkits: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=906915
Enabled in Debian upstream, needs to tickle through PureOS.
Needed for the devkits: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=906915
Enabled in Debian upstream, needs to tickle through PureOS.