This is the password input mode. When input as pskKeyModePassPhrase,
hpnicfDot11SecurePskKeyString must be 8 to 63 characters; when input as
pskKeyModeRawKey, hpnicfDot11SecurePskKeyString must be 64 characters and
each character must be '0'-'9', 'a'-'f' and 'A'-'F'.