rnndb/pdaemon/pm: properly document MC_IDLE
rnndb/pdaemon/pm: properly document MC_IDLE

Thanks Hakzsam for your windows port of nvapeek/poke, it allowed me to check
with GPU-Z that the counter indeed was MC_IDLE!

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