wlbt: Use cfg80211_connect_bss instead of cfg80211_connect_result

wlbt: Use cfg80211_connect_bss instead of cfg80211_connect_result

When AP is chanGing channel, cfg80211 is having 2 scan results, one
with older channel and another with new channel. cfg80211_connect_result()
API allows cfg80211 to pick bss from its scan data base and in this case
cfg80211 sometimes picks older scan result and supplicant shows wrong
channel number. So use cfg80211_connect_bss instead of cfg80211_connect_result

Change-Id: I27fb6fe37731f97c104228d8515bc211ab5bbcc0
SCSC-Bug-Id: HOST-10749
Signed-off-by: Jaya Prakash Sangaru <j.sangaru@samsung.com>