nvc0: Add shiftamt flag for bfind insn.
nvc0: Add shiftamt flag for bfind insn.

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