let find_rule find absolute path rules

dracut-functions

@@ -145,6 +145,7 @@ inst_symlink() {
 
 # find a rule in the usual places.
 find_rule() {
+    [[ -f $1 ]] && { echo "$1"; return 0; }
     for r in . /lib/udev/rules.d /etc/udev/rules.d $dsrc/rules.d; do
 	[[ -f $r/$1 ]] && { echo "$r/$1"; return 0; }
     done