Update git helper scripts

buildroot/share/git/mfinfo

@@ -7,11 +7,15 @@
 #   - Remote (upstream) Org name (MarlinFirmware)
 #   - Remote (origin) Org name (your Github username)
 #   - Repo Name (Marlin, MarlinDev, MarlinDocumentation)
-#   - PR Target branch (bugfix-2.0.x, dev, or master)
+#   - PR Target branch (bugfix-1.1.x, bugfix-2.0.x, or master)
 #   - Branch Arg (the branch argument or current branch)
 #   - Current Branch
 #
 
+usage() {
+  echo "Usage: `basename $0` [1|2] [branch]" 1>&2
+}
+
 CURR=$(git branch 2>/dev/null | grep ^* | sed 's/\* //g')
 [[ -z $CURR ]] && { echo "No git repository here!" 1>&2 ; exit 1; }
 [[ $CURR == "(no"* ]] && { echo "Git is busy with merge, rebase, etc." 1>&2 ; exit 1; }
@@ -23,17 +27,29 @@ ORG=$(git remote get-url upstream 2>/dev/null | sed -E 's/.*[\/:](.*)\/.*$/\1/')
 [[ $ORG == MarlinFirmware ]] || { echo "`basename $0`: Not a Marlin repository." 1>&2 ; exit 1; }
 
 case "$REPO" in
-  Marlin              ) TARG=bugfix-2.0.x ;;
-  MarlinDev           ) TARG=dev ;;
+  Marlin              ) TARG=bugfix-1.1.x ;
+                        [[ $# > 0 ]] && [[ $1 == 2 ]] && TARG=bugfix-2.0.x
+                        ;;
   MarlinDocumentation ) TARG=master ;;
 esac
 
 FORK=$(git remote get-url origin 2>/dev/null | sed -E 's/.*[\/:](.*)\/.*$/\1/')
 
+# BRANCH can be given as the last argument
 case "$#" in
   0 ) BRANCH=$CURR ;;
-  1 ) BRANCH=$1 ;;
-  * ) echo "Usage: `basename $0` [branch]" 1>&2 ; exit 1 ;;
+  1 )
+    case "$1" in
+      1|2) BRANCH=$CURR ;;
+      *) BRANCH=$1 ;;
+    esac
+    ;;
+  2 )
+    case "$1" in
+      1|2) BRANCH=$2 ;;
+      *) usage ; exit 1 ;;
+    esac
+    ;;
 esac
 
 echo "$ORG $FORK $REPO $TARG $BRANCH $CURR"