This patch realizes framebuffer console support for barebox. It
supports colors and enough escape sequences to show the barebox
console and editor properly.
fbconsole mini-HOWTO
====================
1. compile sandbox barebox with
CONFIG_VIDEO=y
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_DRIVER_VIDEO_SDL=y
2. run barebox
3. test fbconsole
fbconsole0.active=oe
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>