Add 9 digits to mobile phone with NDC 91 to 99

It started yesterday and in a couple of months 8 digits with be invalid on this area.
Reference (pt-BR): http://www.anatel.gov.br/Portal/exibirPortalNoticias.do?acao=carregaNoticia&codigo=35520
Merge pull request #192 from thiagogabriel/update-brazilian-cellphone-rules-nov2014

Add 9 digits to mobile phone with NDC 91 to 99