[clang] [compiler-rt] [llvm] [RISCV] Support new groupid/bitmask for cpu_model (PR #101632)

[Craig Topper via llvm-commits]

================
@@ -334,6 +354,8 @@ int test_riscv(int a) {
     return 7;
   else if (__builtin_cpu_supports("v"))
     return 11;
+  else if (__builtin_cpu_supports("zcb"))
+    return 11;
----------------
topperc wrote:

Pick a different number than 11 since it was already used for `v`

https://github.com/llvm/llvm-project/pull/101632