Add Discord presence ioctlv to /dev/dolphin

Source/Android/jni/MainAndroid.cpp

@@ -131,6 +131,21 @@ void Host_UpdateTitle(const std::string& title)
   __android_log_write(ANDROID_LOG_INFO, DOLPHIN_TAG, title.c_str());
 }
 
+void Host_UpdateDiscordClientID(const std::string& client_id)
+{
+}
+
+bool Host_UpdateDiscordPresenceRaw(const std::string& details, const std::string& state,
+                                   const std::string& large_image_key,
+                                   const std::string& large_image_text,
+                                   const std::string& small_image_key,
+                                   const std::string& small_image_text,
+                                   const int64_t start_timestamp, const int64_t end_timestamp,
+                                   const int party_size, const int party_max)
+{
+  return false;
+}
+
 void Host_UpdateDisasmDialog()
 {
 }