hwtest/ptherm: add interrupt thresholds interrupts
hwtest/ptherm: add interrupt thresholds interrupts

Tests are all passing on at least nv84 and nv86

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