pdaemon: document more power-gating-related regs (from gk20a)
pdaemon: document more power-gating-related regs (from gk20a)

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