iwlwifi: mvm: fix wrong DCM TLC config

When configuring TLC DCM flag:
1. check the peer's RX DCM capabilities (since we TX)
2. do not set DCM_NSS_2 since we do not support it
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Fixes: 423584dd ("iwlwifi: rs-fw: support dcm")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c

@@ -149,14 +149,9 @@ static u16 rs_fw_set_config_flags(struct iwl_mvm *mvm,
 
 	if (he_cap && he_cap->has_he &&
 	    (he_cap->he_cap_elem.phy_cap_info[3] &
-	     IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_MASK)) {
+	     IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_MASK))
 		flags |= IWL_TLC_MNG_CFG_FLAGS_HE_DCM_NSS_1_MSK;
 
-		if (he_cap->he_cap_elem.phy_cap_info[3] &
-		    IEEE80211_HE_PHY_CAP3_DCM_MAX_TX_NSS_2)
-			flags |= IWL_TLC_MNG_CFG_FLAGS_HE_DCM_NSS_2_MSK;
-	}
-
 	return flags;
 }