[NFC] As part of using inclusive language within the llvm project, this patch replaces master with main in `IntrinsicsNVVM.td`. Reviewed By: steffenlarsen Differential Revision: https://reviews.llvm.org/D114193
[NFC] As part of using inclusive language within the llvm project, this patch replaces master with main in `IntrinsicsNVVM.td`. Reviewed By: steffenlarsen Differential Revision: https://reviews.llvm.org/D114193