rc: set up additional partition for installer logs

src/etc/rc

@@ -174,6 +174,7 @@ if [ ${USE_MFS_VAR} -ne 0 ]; then
 	echo -n "Setting up memory disks..."
 
 	setup_mfs_link /root /var/cache opnsense-update
+	setup_mfs_link /root /var/log bsdinstaller
 	setup_mfs_link /root /var/cache pkg
 	setup_mfs_link /root /var/db pkg
 	setup_mfs_link /root /var crash
@@ -181,6 +182,7 @@ if [ ${USE_MFS_VAR} -ne 0 ]; then
 	mount -t tmpfs tmpfs /var
 
 	install_mfs_link /root /var/cache opnsense-update
+	install_mfs_link /root /var/log bsdinstaller
 	install_mfs_link /root /var/cache pkg
 	install_mfs_link /root /var/db pkg
 	install_mfs_link /root /var crash
@@ -188,6 +190,7 @@ if [ ${USE_MFS_VAR} -ne 0 ]; then
 	echo "done."
 else
 	remove_mfs_link /root /var/cache opnsense-update
+	remove_mfs_link /root /var/log bsdinstaller
 	remove_mfs_link /root /var/cache pkg
 	remove_mfs_link /root /var/db pkg
 	remove_mfs_link /root /var crash