firmware: raspicam: Re-enabled ISO setting
See: https://github.com/raspberrypi/userland/pull/58

firmware: raspicam: Added the option to save the raw data as RGB888.
https://github.com/raspberrypi/userland/pull/61

firmware: raspicam: Fix for dark frames in timelapse
https://github.com/raspberrypi/userland/pull/62