wifi: ath12k: fix mbssid max interface advertisement

The Current method for advertising the maximum MBSSID interface count
assumes single radio per wiphy (multi wiphy model). However, this
assumption is incorrect for multi radio per wiphy (single wiphy model).
Therefore, populate the parameter for each radio present in the MAC
abstraction layer (ah). This approach ensure scalability for both single
wiphy and multi wiphy models.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1

Fixes: 519a545c ("wifi: ath12k: advertise driver capabilities for MBSSID and EMA")
Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://patch.msgid.link/20240613153813.3509837-1-quic_periyasa@quicinc.com

drivers/net/wireless/ath/ath12k/mac.c

@@ -8942,6 +8942,7 @@ static int ath12k_mac_hw_register(struct ath12k_hw *ah)
 	u32 ht_cap = U32_MAX, antennas_rx = 0, antennas_tx = 0;
 	bool is_6ghz = false, is_raw_mode = false, is_monitor_disable = false;
 	u8 *mac_addr = NULL;
+	u8 mbssid_max_interfaces = 0;
 
 	wiphy->max_ap_assoc_sta = 0;
 
@@ -8985,6 +8986,8 @@ static int ath12k_mac_hw_register(struct ath12k_hw *ah)
 			mac_addr = ar->mac_addr;
 		else
 			mac_addr = ab->mac_addr;
+
+		mbssid_max_interfaces += TARGET_NUM_VDEVS;
 	}
 
 	wiphy->available_antennas_rx = antennas_rx;
@@ -9077,7 +9080,7 @@ static int ath12k_mac_hw_register(struct ath12k_hw *ah)
 	wiphy->iftype_ext_capab = ath12k_iftypes_ext_capa;
 	wiphy->num_iftype_ext_capab = ARRAY_SIZE(ath12k_iftypes_ext_capa);
 
-	wiphy->mbssid_max_interfaces = TARGET_NUM_VDEVS;
+	wiphy->mbssid_max_interfaces = mbssid_max_interfaces;
 	wiphy->ema_max_profile_periodicity = TARGET_EMA_MAX_PROFILE_PERIOD;
 
 	if (is_6ghz) {