staging: rtl8723bs: Fix IEEE80211 authentication algorithm constants.

This driver's local ieee80211 include file defines the constants
AUTH_ALG_* to represent authenication algorithm options.  However,
these constants are defined in 'linux/ieee80211.h' as WLAN_AUTH_*,
and have the correct values.

Signed-off-by: Quytelda Kahja <quytelda@tamalin.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>