[NFC][llvm] Inclusive language: remove instance of master in IntrinsicsNVVM.td

[quinnp]

Summary

[NFC] As part of using inclusive language within the llvm project, this patch
replaces master with main in IntrinsicsNVVM.td.

[steffenlarsen]

Absolutely! Thank you for making this change.

llvm/include/llvm/IR/IntrinsicsNVVM.td

list<WMMA_REGS> ret =
      !foldl([]<WMMA_REGS>, Geom, t1, geom, !listconcat(t1,
      !foldl([]<WMMA_REGS>, Frags, t2, frag, !listconcat(t2,
      !foldl([]<WMMA_REGS>, Types, t3, type, !listconcat(t3,
             [WMMA_REGS<geom, frag, type>]))))));
    // Debugging aid for readable representation of the list above.
    list<string> ops = !foreach(x, ret, x.gft);
 }
 
-// Creates list of valid combinations of fragments. This is the master list that
+// Creates list of valid combinations of fragments. This is the main list that
 // drives generation of corresponding intrinsics and instructions.
 class NVVM_MMA_OPS {
   list<list<WMMA_REGS>> tf32_wmma_ops = MMA_OPS<
             ["m16n16k8"],
             ["tf32"], [], ["f32"], []>.ret;
   list<list<WMMA_REGS>> bf16_wmma_ops = MMA_OPS<
             ["m16n16k16", "m32n8k16", "m8n32k16"],
             ["bf16"], [], ["f32"], []>.ret;