Merge pull request #3508 from blocktrron/pr-bootcount

gluon-setup-mode: execute bootcount initscript in setup-mode

package/gluon-setup-mode/files/lib/gluon/setup-mode/rc.d/S11bootcount

+#!/bin/sh /etc/rc.common
+
+# shellcheck disable=SC1091
+
+if [ -x /etc/init.d/bootcount ] && /etc/init.d/bootcount enabled; then
+	. /etc/init.d/bootcount
+fi