vga_setpos
vga_setpos(fb_info.cursor.pos.y, fb_info.cursor.pos.x);
bcons_dev->bd_setpos = vga_setpos;
vga_setpos(row + 1, col);
vga_setpos(row, col + 1);
vga_setpos(row + 1, 0);
vga_setpos(row, 0);
static void vga_setpos(int, int);