Merge pull request #8566 from u-blox/github8520issue

Wifi: ublox fix to keep the credentials stored

Author: Cruz Monrreal

targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F439xI/TARGET_MODULE_UBLOX_ODIN_W2/sdk/ublox-odin-w2-drivers/OdinWiFiInterface.cpp

@@ -220,8 +220,8 @@ nsapi_error_t OdinWiFiInterface::set_credentials(const char *ssid, const char *p
     osStatus res = _mutex.lock();
     MBED_ASSERT(res == osOK);
 
-    _sta.ssid = ssid;
-    _sta.passwd = pass;
+    strncpy(_sta.ssid, ssid, cbWLAN_SSID_MAX_LENGTH);
+    strncpy(_sta.passwd, pass, cbWLAN_MAX_PASSPHRASE_LENGTH);
     _sta.security = security;
 
     res = _mutex.unlock();

targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F439xI/TARGET_MODULE_UBLOX_ODIN_W2/sdk/ublox-odin-w2-drivers/OdinWiFiInterface.h

@@ -262,8 +262,8 @@ class OdinWiFiInterface : public WiFiInterface, public EMACInterface
     };
 
     struct sta_s {
-        const char          *ssid;
-        const char          *passwd;
+        char                ssid[cbWLAN_SSID_MAX_LENGTH];
+        char                passwd[cbWLAN_MAX_PASSPHRASE_LENGTH];
         nsapi_security_t    security;
         uint8_t             channel;
         int                 timeout_ms;