iwlwifi: mvm: fix a few firmware capability checks

My cleanup in "iwlwifi: prepare for higher API/CAPA bits" accidentally
inverted a few tests - fix them.

Fixes: 859d914c ("iwlwifi: prepare for higher API/CAPA bits")
Reported-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>