Support for RISC-V architecture

[sillycowvalley]

Arduino board: Raspberry Pi Pico 2
Arduino IDE version: 2.3.3
NEO Pixel library version: 1.12.3
Board Manager URL: https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json
Steps:

• open NeoPixel "simple" example
• choose Raspberry Pi Pico 2 board
• select Tools | Architecture | RISC-V
• compile

Error message:

c:\Users<user name>\Documents\Arduino\libraries\Adafruit_NeoPixel\Adafruit_NeoPixel.cpp:3269:2: error: #error Architecture not supported
3269 | #error Architecture not supported
| ^~~~~

exit status 1

Compilation error: exit status 1