fix warning "type qualifiers ignored on function return type" for long long scalar types
fix warning "type qualifiers ignored on function return type" for long long scalar types

ROCmSoftwarePlatform/hipeigen,Zefz/eigen,TSC21/Eigen,pasuka/eigen,Zefz/eigen,ritsu1228/eigen,ROCmSoftwarePlatform/hipeigen,toastedcrumpets/eigen,TSC21/Eigen,pasuka/eigen,toastedcrumpets/eigen,toastedcrumpets/eigen,ROCmSoftwarePlatform/hipeigen,ROCmSoftwarePlatform/hipeigen,ritsu1228/eigen,pasuka/eigen,Zefz/eigen,toastedcrumpets/eigen,pasuka/eigen,pasuka/eigen,TSC21/Eigen,TSC21/Eigen,ritsu1228/eigen,ritsu1228/eigen,ritsu1228/eigen,Zefz/eigen