http://web1.assist.org/web-assist/report.do?agreement=aa&reportPath=REPORT_2&reportScript=Rep2.pl&event=19&dir=1&sia=BERKELEY&ria=UCB&ia=BERKELEY&oia=UCB&aay=14-15&ay=14-15&dora=PHYSICS says “Complete as many lower division major requirements as possible. See details on preparation for this major below.” That implies that it is better to complete all of the requirements, but is not an automatic rejection if you do not.