add logo to footer in opencart v2.3

footer_logo.ocmod.xml

<?xml version="1.0" encoding="utf-8"?>
<modification>
    <name>Footer Logo</name>
    <code>Footer Logo</code>
    <version>1.3</version>
    <author>Chris Bloor</author>
    <file path="catalog/view/theme/default/template/common/footer.tpl">
        <operation>
            <search><![CDATA[<p><?php echo $powered; ?></p>]]></search>
            <add position="before"><![CDATA[
                <img src="https://www.opencart.com/application/view/image/icon/opencart-logo.png" alt="logo">
			]]></add>
        </operation>
    </file>
</modification>