loggerd: log HW-specific extras (#28084)

* loggerd: log HW-specific extras

* fix value

---------

Co-authored-by: Comma Device <device@comma.ai>
old-commit-hash: e24d28fd4512d8fd41a4a9ba610b1d450a3734a0

system/hardware/base.h

@@ -18,6 +18,10 @@ public:
 
   static std::string get_serial() { return "cccccc"; }
 
+  static std::map<std::string, std::string> get_init_logs() {
+    return {};
+  }
+
   static void reboot() {}
   static void poweroff() {}
   static void set_brightness(int percent) {}

system/hardware/tici/hardware.h

@@ -73,6 +73,13 @@ public:
     std::system(("pactl set-sink-volume @DEFAULT_SINK@ " + std::string(volume_str)).c_str());
   }
 
+
+  static std::map<std::string, std::string> get_init_logs() {
+    return {
+      {"/BUILD", util::read_file("/BUILD")},
+    };
+  }
+
   static bool get_ssh_enabled() { return Params().getBool("SshEnabled"); };
   static void set_ssh_enabled(bool enabled) { Params().putBool("SshEnabled", enabled); };
 };