- Added esp32s3_board_spislavedev.c with board-level SPI slave logic
- Added esp32s3_board_spislavedev.h public header in common/include
- Updated Make.defs to include the new source when CONFIG_SPI_SLAVE_DRIVER=y
- Adding spislv board config to esp32s3-devkit
- Adding documentation of esp32s3 devkit spi slv
- Fixing path include in esp32s3_board_spislavedev.c
- Fixing relative path in the header of esp32s3_board_spislavedev.h
- Removing neasted check in Make.defs, consistency reasons
This provides initial support for SPI slave device initialization
on ESP32-S3 boards, making the feature available under conditional
build configuration.
Signed-off-by: Thiago Finelon <thiago.sfinelon@gmail.com>