iwlwifi: mvm: set protected flag only for NDP ranging

Don't use protected ranging negotiation for FTM ranging as responders
that support only FTM ranging don't expect the FTM request to be
protected.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Fixes: 517a5eb9 ("iwlwifi: mvm: when associated with PMF, use protected NDP ranging negotiation")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211219132536.f50ed0e3c6b3.Ibff247ee9d4e6e0a1a2d08a3c8a4bbb37e6829dd@changeid


Signed-off-by: Luca Coelho <luciano.coelho@intel.com>