[WiFi][Shell] Fix checks

Author: mihai-ignat

src/lib/shell/commands/WiFi.h

@@ -25,13 +25,11 @@
 #include <lib/shell/Engine.h>
 #include <platform/NetworkCommissioning.h>
 
-using namespace chip::DeviceLayer::NetworkCommissioning;
-
 namespace chip {
 namespace Shell {
 
-void SetWiFiDriver(WiFiDriver * driver);
-WiFiDriver * GetWiFiDriver();
+void SetWiFiDriver(chip::DeviceLayer::NetworkCommissioning::WiFiDriver * driver);
+chip::DeviceLayer::NetworkCommissioning::WiFiDriver * GetWiFiDriver();
 
 } // namespace Shell
 } // namespace chip