Optimization for FreeBSD distro.

INSTALL/grub/grub.cfg

@@ -129,6 +129,9 @@ function get_os_type {
         elif [ -e (loop)/bin/freebsd-version ]; then
             set vtoy_os=Unix
             set vt_unix_type=FreeBSD
+        elif [ -e (loop)/boot/kernel/geom_ventoy.ko ]; then
+            set vtoy_os=Unix
+            set vt_unix_type=FreeBSD
         elif vt_str_begin "$vt_system_id" "DragonFly"; then
             set vtoy_os=Unix
             set vt_unix_type=DragonFly
@@ -469,6 +472,10 @@ function ventoy_freebsd_proc {
         set vt_freebsd_ver=9.x
     fi
     
+    if [ -e (loop)/boot/kernel/geom_ventoy.ko ]; then
+        vt_unix_ko_fillmap /boot/kernel/geom_ventoy.ko
+        return
+    fi
     
     if [ -e (loop)/usr/freebsd-dist/cloninst.sh ]; then
         set vtFreeBsdDistro=ClonOS