drm/meson: explicitly remove aggregate driver at module unload time

drm/meson: explicitly remove aggregate driver at module unload time

This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven.
This ID is fixed in Linux Kernel version v5.10.150 by commit 8a427a22839daacd36531a62c83d5c9cd6f20657. For more details please see the references link.