Hook Newsletter widget area before footer.

functions.php

<?php
// Do NOT include the opening php tag.

// Add newsletter widget area before footer.
add_action( 'genesis_before_footer', 'sp_newsletter_widget' );
function sp_newsletter_widget() {

	genesis_widget_area( 'newsletter', array(
		'before' => '<div class="newsletter"><div class="arrow-down"></div><div class="wrap">',
		'after'  => '</div></div></div>',
	) );

}