Setup.php

<?php

class Ip_Viewas_Model_Resource_Setup extends Mage_Eav_Model_Entity_Setup
{
    /**
     * @return array
     */
    public function getDefaultEntities()
    {
        return array(
            'catalog_category' => array(
                'entity_model'      => 'catalog/category',
                'attribute_model'   => 'catalog/resource_eav_attribute',
                'table'             => 'catalog/category',
                'additional_attribute_table' => 'catalog/eav_attribute',
                'entity_attribute_collection' => 'catalog/category_attribute_collection',
                'default_group' => 'General Information',
                'attributes'        => array(
                    'viewas_mode' => array(
                        'group'         => 'General Information',
                        'input'         => 'select',
                        'type'          => 'varchar',
                        'source'        => 'adminhtml/system_config_source_catalog_listMode',
                        'label'         => 'List Mode',
                        'backend'       => '',
                        'visible'       => true,
                        'required'      => false,
                        'visible_on_front' => true,
                        'global'        => Mage_Catalog_Model_Resource_Eav_Attribute::SCOPE_GLOBAL,
                    ),
                    'display_qty' => array(
                        'group'         => 'General Information',
                        'input'         => 'select',
                        'type'          => 'varchar',
                        'source'        => 'adminhtml/system_config_source_yesno',
                        'label'         => 'Display Qty in Catalog',
                        'backend'       => '',
                        'visible'       => true,
                        'required'      => false,
                        'visible_on_front' => true,
                        'global'        => Mage_Catalog_Model_Resource_Eav_Attribute::SCOPE_GLOBAL,
                    )
               )
            )
        );
    }

}