Pass parameters to external JS file with drupal_add_js()
I ended up just going with a modification of the current code. I modified the behavior above so that it just loads the variables:

var _elqQ = _elqQ || [];

(function ($) {

  Drupal.behaviors.eloquaTracking = {
    attach: function (context, settings) {

      _elqQ.push(['elqSetSiteId', Drupal.settings.eloqua.siteId]);
      _elqQ.push(['elqTrackPageView']);
    }
  };
})(jQuery);


and then used drupal_add_js() to load the tracking file in my module

drupal_add_js(drupal_get_path('module', 'eloqua') . '/elqCfg.min.js');