Enable syscall-specific functions in TSan/NetBSD

NetBSD ships now with netbsd_syscall_hooks.h and requires support
for TSan specific features to be enabled.

This is follow up of:

  D42048: Add NetBSD syscall hooks skeleton in sanitizers

Sponsored by <The NetBSD Foundation>

llvm-svn: 325245

compiler-rt/lib/tsan/rtl/tsan_interceptors.cc

@@ -2424,7 +2424,7 @@ struct ScopedSyscall {
   }
 };
 
-#if !SANITIZER_FREEBSD && !SANITIZER_MAC && !SANITIZER_NETBSD
+#if !SANITIZER_FREEBSD && !SANITIZER_MAC
 static void syscall_access_range(uptr pc, uptr p, uptr s, bool write) {
   TSAN_SYSCALL();
   MemoryAccessRange(thr, pc, p, s, write);