This implementation's support for diversity, encoded as:
X'01': Diversity is available and is performed over the fixed
list of antennas defined in coDot11DiversitySelectionRx.
X'02': Diversity is not supported.
X'03': Diversity is supported and control of diversity is also
available, in which case the attribute
coDot11DiversitySelectionRx can be dynamically modified
by the LME.