NM_FLAGS_HAS() uses a static-assert that the second argument is a
single flag (power of two). With a single flag, NM_FLAGS_HAS(),
NM_FLAGS_ANY() and NM_FLAGS_ALL() are all identical.

The second argument must be a compile time constant, and if that is
not the case, one must not use NM_FLAGS_HAS().

Use NM_FLAGS_ANY() in these cases.