dracut.sh:_get_fs_type() readlink devices to avoid dups

dracut.sh

@@ -603,11 +603,11 @@ fi
 _get_fs_type() (
     [[ $1 ]] || return
     if [[ -b $1 ]] && get_fs_env $1; then
-        echo "$1|$ID_FS_TYPE"
+        echo "$(readlink -f $1)|$ID_FS_TYPE"
         return 1
     fi
     if [[ -b /dev/block/$1 ]] && get_fs_env /dev/block/$1; then
-        echo "/dev/block/$1|$ID_FS_TYPE"
+        echo "$(readlink -f /dev/block/$1)|$ID_FS_TYPE"
         return 1
     fi
     if fstype=$(find_dev_fstype $1); then