给android的wifi设备添加PMF支持时，抓取omnipeek分析。
从assoc req 中发现相关标志位没有使能，说明STA 没有使能PMF
RSN Capabilities: %0000000000000000 [74-75]
xx...... ........ Reserved
........ 0....... Management Frame Protection Capable (MFPC): disabled （optional）
........ .0...... Management Frame Protection Required (MFPR): not mandatory (required）
而 Probe Response中使能了相关标志位。说明AP具备PMF 能力
RSN Capabilities: %0000000010000000 [94-95]
........ 1....... Management Frame Protection Capable (MFPC): enabled
........ .0...... Management Frame Protection Required (MFPR): not mandatory