* Move cm8jl65 class member variable initialization from constructor list to declarations. Format whitespace and move method doxy comments to declarations.
* Refactor the cm8jl65 driver start() method, and rename info()->status().
* Continued refactoring of the cm8jl65 driver class:
- Condense all class files into a single *.cpp file and give class scope resolution to previously unscoped methods.
- Refactor cm8jl65 namespace level driver entry methods to reduce code and improve clarity.
- Breakout CDev specific initialization LOC into the device_init() method.
- Move the endian modification inside of the crc16_calc() method.
* Deprecate the hardware ringbuffer, _class_instance, and ioctl() from the cm8jl65 driver.
It makes more sense to set the optimization flags on a platform basis
instead of individually for each module. This allows for different
optimization options for SITL, NuttX, Snapdragon, etc.
Now the mixer is a C++ library that can be fairly easily bolted into an output driver to provide mixing services.
Teach the FMU driver how to use it as an example. More testing is still required.