wifi: iwlwifi: support PPAG in China for older FW cmd version

Allows the China bit in the ppag flags to turn on also when
FW cmd version is 1 (if FW has the capability).
Signed-off-by: Alon Giladi <alon.giladi@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230524203151.3cc19e799eeb.I9054b1d63fd7ae2b5f0e416825b4b1dc9f79cc80@changeidSigned-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/intel/iwlwifi/fw/acpi.c

@@ -1155,7 +1155,15 @@ int iwl_read_ppag_table(struct iwl_fw_runtime *fwrt, union iwl_ppag_table_cmd *c
                         IWL_DEBUG_RADIO(fwrt,
                                         "PPAG table rev is %d but FW supports v1, sending truncated table\n",
                                         fwrt->ppag_ver);
-                        cmd->v1.flags &= cpu_to_le32(IWL_PPAG_ETSI_MASK);
+			if (!fw_has_capa(&fwrt->fw->ucode_capa,
+					 IWL_UCODE_TLV_CAPA_PPAG_CHINA_BIOS_SUPPORT)) {
+				cmd->v1.flags &= cpu_to_le32(IWL_PPAG_ETSI_MASK);
+				IWL_DEBUG_RADIO(fwrt,
+						"FW doesn't support ppag China bit\n");
+			} else {
+				IWL_DEBUG_RADIO(fwrt,
+						"FW supports ppag China bit\n");
+			}
 		}
 	} else if (cmd_ver >= 2 && cmd_ver <= 4) {
                 num_sub_bands = IWL_NUM_SUB_BANDS_V2;

drivers/net/wireless/intel/iwlwifi/fw/file.h

@@ -462,6 +462,7 @@ enum iwl_ucode_tlv_capa {
 	IWL_UCODE_TLV_CAPA_BIGTK_TX_SUPPORT		= (__force iwl_ucode_tlv_capa_t)109,
 	IWL_UCODE_TLV_CAPA_MLD_API_SUPPORT		= (__force iwl_ucode_tlv_capa_t)110,
 	IWL_UCODE_TLV_CAPA_SCAN_DONT_TOGGLE_ANT         = (__force iwl_ucode_tlv_capa_t)111,
+	IWL_UCODE_TLV_CAPA_PPAG_CHINA_BIOS_SUPPORT	= (__force iwl_ucode_tlv_capa_t)112,
 
 #ifdef __CHECKER__
 	/* sparse says it cannot increment the previous enum member */