By default the Div Framework navigation logo links to the home page, but if you want to redirect it to a custom link you would add this filter in the functions.php of your child theme.

div-framework_redirect-navigation-logo.php

/**
 * REDIRECT NAVIGATION LOGO
 * Used to redirect the navigation logo to a custom link
 */
add_filter( 'nav_logo', function($s){
	$pattern = "/(?<=href=(\"|'))[^\"']+(?=(\"|'))/";
	return preg_replace($pattern,$new_url,$s);
});