Support for LibreTiny platform (RTL8710, BK7231 & other modules) (#3509)

Co-authored-by: Kuba Szczodrzyński <kuba@szczodrzynski.pl>
Co-authored-by: Sam Neirinck <git@samneirinck.com>
Co-authored-by: David Buezas <dbuezas@users.noreply.github.com>
Co-authored-by: Stroe Andrei Catalin <catalin2402@gmail.com>
Co-authored-by: Sam Neirinck <github@samneirinck.be>
Co-authored-by: Péter Sárközi <xmisterhu@gmail.com>
Co-authored-by: Hajo Noerenberg <hn@users.noreply.github.com>

esphome/components/api/api_connection.cpp

@@ -1051,6 +1051,10 @@ DeviceInfoResponse APIConnection::device_info(const DeviceInfoRequest &msg) {
   resp.manufacturer = "Espressif";
 #elif defined(USE_RP2040)
   resp.manufacturer = "Raspberry Pi";
+#elif defined(USE_BK72XX)
+  resp.manufacturer = "Beken";
+#elif defined(USE_RTL87XX)
+  resp.manufacturer = "Realtek";
 #elif defined(USE_HOST)
   resp.manufacturer = "Host";
 #endif