Nigeria’s Wizkid (Holla at Your Boy), Ice Prince (Oleku) and Ghana’s Sarkodie have been nominated for the 2012 BET Awards Best International Act Africa Category. Other nominees are Camp Muella (Kenya) and Mokob (Mali). Full List of Nominees: Best Female R&B Artist Marsha Ambrosius Beyoncé Mary J. Blige Melanie Fiona Rihanna Best Male R&B Artist …