drivers/video : move video drivers to drivers/video

Makefile

drivers/Makefile

drivers/video/Makefile

drivers/video/ati_ids.h

drivers/video/ati_radeon_fb.c

drivers/video/ati_radeon_fb.h

drivers/video/cfb_console.c

drivers/video/ct69000.c

drivers/video/sed13806.c

drivers/video/sed156x.c

drivers/video/sm501.c

drivers/video/smiLynxEM.c

drivers/video/videomodes.c

drivers/video/videomodes.h