iwlwifi: mvm: add support for PHY context command v4

A new version of this command deprecates the rxchain_info field
but is otherwise the same, so treat it the same way. We already
leave the rxchain_info zeroed since the RLC command is supported.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211204083238.aca5bd78518e.I2f1b4b38899717851ea9f5b6dd23cde27e10387a@changeidSigned-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/fw/api/phy-ctxt.h

 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
 /*
- * Copyright (C) 2012-2014, 2018, 2020 Intel Corporation
+ * Copyright (C) 2012-2014, 2018, 2020-2021 Intel Corporation
  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
  * Copyright (C) 2016-2017 Intel Deutschland GmbH
  */
@@ -150,11 +150,12 @@ struct iwl_phy_context_cmd {
 	/* COMMON_INDEX_HDR_API_S_VER_1 */
 	__le32 id_and_color;
 	__le32 action;
-	/* PHY_CONTEXT_DATA_API_S_VER_3 */
+	/* PHY_CONTEXT_DATA_API_S_VER_3, PHY_CONTEXT_DATA_API_S_VER_4 */
 	struct iwl_fw_channel_info ci;
 	__le32 lmac_id;
-	__le32 rxchain_info;
+	__le32 rxchain_info; /* reserved in _VER_4 */
 	__le32 dsp_cfg_flags;
 	__le32 reserved;
-} __packed; /* PHY_CONTEXT_CMD_API_VER_3 */
+} __packed; /* PHY_CONTEXT_CMD_API_VER_3, PHY_CONTEXT_CMD_API_VER_4 */
+
 #endif /* __iwl_fw_api_phy_ctxt_h__ */

drivers/net/wireless/intel/iwlwifi/mvm/phy-ctxt.c

@@ -212,7 +212,7 @@ static int iwl_mvm_phy_ctxt_apply(struct iwl_mvm *mvm,
 	int ver = iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP,
 					PHY_CONTEXT_CMD, 1);
 
-	if (ver == 3) {
+	if (ver == 3 || ver == 4) {
 		struct iwl_phy_context_cmd cmd = {};
 
 		/* Set the command header fields */