v2.2.0 to add custom SPI, SPI1/SPI2 for W5500

### Releases v2.2.0

1. Add support to SPI1, SPI2 for Teensy using W5x00 with [Ethernet_Generic library](https://github.com/khoih-prog/Ethernet_Generic)
2. Add support to custom SPI for Mbed RP2040, Portenta-H7, etc. using W5x00 with [Ethernet_Generic library](https://github.com/khoih-prog/Ethernet_Generic)
3. Add examples [AdvancedWebServer_Teensy4x_SPI1](examples/AdvancedWebServer_Teensy4x_SPI1) to demo new feature
4. Add examples [AdvancedWebServer_RP2040_SPI1](examples/AdvancedWebServer_RP2040_SPI1) to demo new feature

README.md

@@ -152,6 +152,8 @@
   * [20. WiFi_Ethernet_Complex_ESP8266 on ESP8266_NODEMCU_ESP12E](#20-WiFi_Ethernet_Complex_ESP8266-on-ESP8266_NODEMCU_ESP12E)
   * [21. AdvancedWebServer_ESP32_SPI2 on ESP32_DEV with W5x00 using Ethernet_Generic Library on SPI2](#21-AdvancedWebServer_ESP32_SPI2-on-ESP32_DEV-with-W5x00-using-Ethernet_Generic-Library-on-SPI2)
   * [22. AdvancedWebServer on RASPBERRY_PI_PICO with W5x00 using Ethernet_Generic Library on SPI1](#22-AdvancedWebServer-on-RASPBERRY_PI_PICO-with-W5x00-using-Ethernet_Generic-Library-on-SPI1)
+  * [23. AdvancedWebServer_RP2040_SPI1 on MBED RASPBERRY_PI_PICO with W5x00 using Ethernet_Generic Library on SPI1](#23-AdvancedWebServer_RP2040_SPI1-on-MBED-RASPBERRY_PI_PICO-with-W5x00-using-Ethernet_Generic-Library-on-SPI1)
+  * [24. AdvancedWebServer_Teensy4x_SPI1 on TEENSY 4.1 with W5x00 using Ethernet_Generic Library on SPI1](#24-AdvancedWebServer_Teensy4x_SPI1-on-TEENSY-41-with-W5x00-using-Ethernet_Generic-Library-on-SPI1)
 * [Debug](#debug)
 * [Troubleshooting](#troubleshooting)
 * [Issues](#issues)