This commit implements the RMT peripheral for all the supported Espressif's RISC-V devices. It also implements the support for the WS2812 addressable RGB LED using the RMT peripheral.
risc-v/espressif: Rename espressif/esp32c6 as esp32c6 risc-v/espressif: Rename espressif/esp32h2 as esp32h2