The mtd-utils package provides NAND and SPI
flash capabilities for mainline kernel /dev/mtdX devices.
This will help on board setup from SD card boot.
closes#4427
* Add initial RISCV support
* Add UEFI edge and current kernel configs
* Cleanup and adjust packages
* Those files were in wrong path
* Fix locations
* Ubuntu images built
* Remove Debian support as its too fragile
* Remove Pinta as it doesn't work under riscv
* Limitation is only for building images
* Remove obsolete switch
* Cleanup major arch config files
* Support for Docker building
