docs/hw/pcounter: rename TEX.MUX_C to TEX.MUX_C_D
docs/hw/pcounter: rename TEX.MUX_C to TEX.MUX_C_D

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