nvbios: init the PM-related table pointers to 0
nvbios: init the PM-related table pointers to 0

Equivalent to "do not display garbage if the tables are not present"

MoochMcGee/envytools,pierremoreau/envytools,envytools/envytools,hakzsam/envytools,karolherbst/envytools,karolherbst/envytools,grate-driver/envytools,hakzsam/envytools,karolherbst/envytools,envytools/envytools,karolherbst/envytools,envytools/envytools,hakzsam/envytools,envytools/envytools,kfractal/envytools,MoochMcGee/envytools,grate-driver/envytools,kfractal/envytools,pierremoreau/envytools,karolherbst/envytools,hakzsam/envytools,grate-driver/envytools,MoochMcGee/envytools,kfractal/envytools,grate-driver/envytools,pierremoreau/envytools,kfractal/envytools,pierremoreau/envytools,MoochMcGee/envytools,hakzsam/envytools,pierremoreau/envytools,envytools/envytools,kfractal/envytools,MoochMcGee/envytools,grate-driver/envytools