base-files: upgrade: add vn and variants

To be used with in the following pattern

  vn "Remaining: "
  for p in $xx; do
    _vn "$p"
  done
  _v

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

package/base-files/files/lib/upgrade/common.sh

@@ -63,8 +63,20 @@ ask_bool() {
 	[ "$answer" -gt 0 ]
 }
 
+_v() {
+	[ -n "$VERBOSE" ] && [ "$VERBOSE" -ge 1 ] && echo "$*" >&2
+}
+
+_vn() {
+	[ -n "$VERBOSE" ] && [ "$VERBOSE" -ge 1 ] && echo -n "$*" >&2
+}
+
 v() {
-	[ -n "$VERBOSE" ] && [ "$VERBOSE" -ge 1 ] && echo "$(date) upgrade: $@" >&2
+	_v "$(date) upgrade: $@"
+}
+
+vn() {
+	_vn "$(date) upgrade: $@"
 }
 
 json_string() {