Actually set the rand() seed for Portduino (#4380)

src/platform/portduino/PortduinoGlue.cpp

@@ -7,6 +7,7 @@
 
 #include <Utility.h>
 #include <assert.h>
+#include <time.h>
 
 #include "PortduinoGlue.h"
 #include "linux/gpio/LinuxGPIOPin.h"
@@ -134,6 +135,9 @@ void portduinoSetup()
         return;
     }
 
+    // Rather important to set this, if not running simulated.
+    randomSeed(time(NULL));
+
     try {
         if (yamlConfig["Logging"]) {
             if (yamlConfig["Logging"]["LogLevel"].as<std::string>("info") == "trace") {
@@ -382,4 +386,4 @@ int initGPIOPin(int pinNum, const std::string gpioChipName)
 #else
     return ERRNO_OK;
 #endif
-}
+}