improving mipi devices pid code

Author: remibettan

src/linux/backend-v4l2.h

@@ -505,7 +505,8 @@ namespace librealsense
         static const std::set<std::uint16_t> mipi_devices_pid = {
             D457_PID,
             D430_GMSL_PID,
-            D415_GMSL_PID
+            D415_GMSL_PID,
+            D401_GMSL_PID
         };
 
         // D457 Development. To be merged into underlying class