Fix tvm.target.generic_func runtime detection (#4910)
Fix tvm.target.generic_func runtime detection (#4910)


dmlc/tvm,sxjscience/tvm,dmlc/tvm,tqchen/tvm,tqchen/tvm,Laurawly/tvm-1,Laurawly/tvm-1,dmlc/tvm,dmlc/tvm,tqchen/tvm,sxjscience/tvm,tqchen/tvm,dmlc/tvm,Laurawly/tvm-1,tqchen/tvm,sxjscience/tvm,Laurawly/tvm-1,dmlc/tvm,tqchen/tvm,sxjscience/tvm,sxjscience/tvm,Laurawly/tvm-1,Laurawly/tvm-1,tqchen/tvm,Laurawly/tvm-1,dmlc/tvm,tqchen/tvm,dmlc/tvm,Laurawly/tvm-1,dmlc/tvm,sxjscience/tvm,Laurawly/tvm-1,tqchen/tvm,Laurawly/tvm-1,sxjscience/tvm,sxjscience/tvm,tqchen/tvm,sxjscience/tvm