iwl_mvm_mac80211_idx_to_hwrate
u16 flags = iwl_mvm_mac80211_idx_to_hwrate(fw, rate_idx);
cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate));
u8 iwl_mvm_mac80211_idx_to_hwrate(const struct iwl_fw *fw, int rate_idx);
rate_plcp = iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate_idx);