d80211: add more IEEE802.11e/WMM support

Hi,

The following patches add more advanced IEEE802.11e/WMM features for d80211. Your comments are welcome.

[PATCH 1/6] d80211: add IEEE802.11e/WMM MLMEs, Status Code and Reason Code [PATCH 2/6] d80211: create "wifi.h" to define WIFI OUIs
[PATCH 3/6] d80211: fix classify_1d() priority selection
[PATCH 4/6] d80211: add IEEE802.11e/WMM Traffic Stream (TS) Management support [PATCH 5/6] d80211: add IEEE 802.11e Direct Link Setup (DLS) support [PATCH 6/6] d80211: add sysfs interface for QoS functions

Thanks,
-yi