Make also sure that the struct bitbang_interface with callbacks that we pass to the bitbang driver is const. Change-Id: I954014f062d6d9185db45f5fbd2ad0b0955aab82 Signed-off-by: R. Diez <rdiezmail-openocd@yahoo.de> Reviewed-on: https://review.openocd.org/c/openocd/+/8536 Tested-by: jenkins Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>