nvbios: Add support for gm204
nvbios: Add support for gm204

pierremoreau/envytools,MoochMcGee/envytools,pierremoreau/envytools,envytools/envytools,MoochMcGee/envytools,envytools/envytools,envytools/envytools,pierremoreau/envytools,pierremoreau/envytools,karolherbst/envytools,MoochMcGee/envytools,karolherbst/envytools,karolherbst/envytools,MoochMcGee/envytools,envytools/envytools,envytools/envytools,MoochMcGee/envytools,karolherbst/envytools,karolherbst/envytools,pierremoreau/envytools