Exclude nvidia from firmware-proprietary for now

mods/firmware-proprietary/data/chroot

@@ -4,7 +4,8 @@ cache = apt.Cache()
 ofile = open("/chroot-out","w",encoding="utf-8")
 ofile.write('WDVN_PACKAGES="$WDVN_PACKAGES')
 for package in cache:
+	if "nvidia" in package.name.lower(): continue
 	if package.candidate.origins[0].component == "non-free-firmware":
 		ofile.write(" " + package.name)
 ofile.write('"')
-ofile.close()
+ofile.close()