CIP Core reference file system
When building the Renesas iwg20m kernel on Ubuntu 18.04 an error
appears because bison was not in the SDK. Add bison and other
possibly important commands (flex, bc, mkimage) for building
the kernel to the SDK.
Reported-by: Patryk Mungai Ndungu <email@example.com>
Signed-off-by: Daniel Sangorrin <firstname.lastname@example.org>