Vendor commands of wiphy aren't initialized when driver load as FTM mode,
if changed to mission mode later with following cli:
echo 0 > /sys/module/wlan/parameters/con_mode,
vendor commands of wiphy keep uninitialized, wpa supplicant can't get
roam offload status by QCA_NL80211_VENDOR_SUBCMD_GET_SUPPORTED_FEATURES,
so PMK isn't sent to driver/firmware, roam offload failed.
To fix it, remove QDF_GLOBAL_FTM_MODE check in wlan_hdd_cfg80211_init, let
vendor commands of wiphy initialized in FTM mode too when driver load.
But in each vendor cmd, check FTM mode when called, if FTM mode, return
-EPERM.
When driver is changed to mission mode, all interfaces are deleted and
re-added by driver, when interface added event is received by
wpa supplicant, QCA_NL80211_VENDOR_SUBCMD_GET_SUPPORTED_FEATURES is
called again to get roam offload enabled status, PMK will be sent to
driver and firmware when RSO start, roam offload will work.
Change-Id: Ie0c868ebd4b7e356d72a154206b13df94f378188
CRs-Fixed: 3213221
5862891f8c