Are there any foods that can help prevent bronchitis?

Yes. Food can prevent bronchitis but only as it pertains to general health. Eating healthy will help to maintain the body's immune system. Things that can be done to directly prevent bronchitis include frequent hand washing. And covering your cough to to prevent spread of germs to others.
No. This is a qualified "no". If there is a food trigger causing the bronchitis (for example, a respiratory allergy), then avoiding the food will resolve the bronchitis. But there is no foods that would prevent bronchitis. Avoid smoking and second hand contact, eat healthy, exercise. The normal stuff.
No... Acute bronchitis is due to an infection of the airways while chronic bronchitis, a form of copd, is due to smoking. Neither is preventable by specific foods although eating a well-balanced diet is generally good for your health.