wifi: mwifiex: add support for WPA-PSK-SHA256

This adds support for the WPA-PSK AKM suite with SHA256 as hashing
method (WPA-PSK-SHA256). Tested with a wpa_supplicant provided AP
using key_mgmt=WPA-PSK-SHA256.

Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://lore.kernel.org/r/20240717-mwifiex-wpa-psk-sha256-v2-2-eb53d5082b62@pengutronix.de
Acked-by: Brian Norris <briannorris@chromium.org>
Link: https://lore.kernel.org/r/20240723-mwifiex-wpa-psk-sha256-v3-3-025168a91da1@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://patch.msgid.link/20240805-mwifiex-wpa-psk-sha256-v4-3-e1eee80508e6@pengutronix.de

drivers/net/wireless/marvell/mwifiex/fw.h

@@ -419,6 +419,7 @@ enum MWIFIEX_802_11_PRIVACY_FILTER {
 #define KEY_MGMT_NONE               0x04
 #define KEY_MGMT_PSK                0x02
 #define KEY_MGMT_EAP                0x01
+#define KEY_MGMT_PSK_SHA256         0x100
 #define KEY_MGMT_SAE                0x400
 #define CIPHER_TKIP                 0x04
 #define CIPHER_AES_CCMP             0x08

drivers/net/wireless/marvell/mwifiex/uap_cmd.c

@@ -61,6 +61,9 @@ int mwifiex_set_secure_params(struct mwifiex_private *priv,
 		case WLAN_AKM_SUITE_PSK:
 			bss_config->key_mgmt |= KEY_MGMT_PSK;
 			break;
+		case WLAN_AKM_SUITE_PSK_SHA256:
+			bss_config->key_mgmt |= KEY_MGMT_PSK_SHA256;
+			break;
 		case WLAN_AKM_SUITE_SAE:
 			bss_config->key_mgmt |= KEY_MGMT_SAE;
 			break;