Merge pull request #1897 from socram8888/fix-pm3-p

Fix pm3-flash-all -p XXX

pm3

@@ -441,6 +441,7 @@ done
 
 # if a port is already provided, let's just run the command as such
 for ARG; do
+    shift
     if [ "$ARG" == "-p" ]; then
         CMD "$@"
         exit $?