RP2040: add SPI PIO interface option, enhance 8 bit parallel PIO

The RP2040 processors can now drive 8 bit parallel and SPI displays using the PIO hardware.

The PIO offloads the processor by providing:
1. PIO managed setWindow sequence
2. PIO managed block and screen fill
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Bodmer committed 2022-01-02 01:08:22 +00:00
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commit 8a2398451b
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{
"name": "TFT_eSPI",
"version": "2.4.2",
"version": "2.4.21",
"keywords": "Arduino, tft, ePaper, display, Pico, RP2040, STM32, ESP8266, NodeMCU, ESP32, M5Stack, ILI9341, ST7735, ILI9163, S6D02A1, ILI9481, ILI9486, ILI9488, ST7789, RM68140, SSD1351, SSD1963, ILI9225, HX8357D",
"description": "A TFT and ePaper SPI graphics library with optimisation for Raspberry Pi Pico, ESP8266, ESP32 and STM32",
"repository":