Staging: rtl8192su/ieee80211: remove superfluous container_of definition

TODO:

- prepare private ieee80211 stack for merge with rtl8187se's version:

  - remove superflous container_of definition from ieee80211.h

  - remove rtl8192su's specific dead code

  - cleanup ieee80211.h

  - move rtl8192su's specific code out from ieee80211.h

#define IWEVCUSTOM 0x8c02

#endif

#ifndef container_of

/**

 * container_of - cast a member of a structure out to the containing structure

 *

 * @ptr:        the pointer to the member.

 * @type:       the type of the container struct this is embedded in.

 * @member:     the name of the member within the struct.

 *

 */

#define container_of(ptr, type, member) ({                      \

        const typeof( ((type *)0)->member ) *__mptr = (ptr);    \

        (type *)( (char *)__mptr - offsetof(type,member) );})

#endif

#define KEY_TYPE_NA		0x0

#define KEY_TYPE_WEP40 		0x1

#define KEY_TYPE_TKIP		0x2