llvm: Use emulated TLS when appropriate for the target

Closes #24236.

src/codegen/llvm.zig

@@ -1047,6 +1047,7 @@ pub const Object = struct {
             comp.data_sections,
             float_abi,
             if (target_util.llvmMachineAbi(&comp.root_mod.resolved_target.result)) |s| s.ptr else null,
+            target_util.useEmulatedTls(&comp.root_mod.resolved_target.result),
         );
         errdefer target_machine.dispose();
 

src/codegen/llvm/bindings.zig

@@ -79,6 +79,7 @@ pub const TargetMachine = opaque {
         data_sections: bool,
         float_abi: FloatABI,
         abi_name: ?[*:0]const u8,
+        emulated_tls: bool,
     ) *TargetMachine;
 
     pub const dispose = LLVMDisposeTargetMachine;