Update Ring Buffer funcs to keep up with ASI updates

ASI recently updated the RBMODE syntax recently to add some capabilities, but it changes the meaning of the arguments.

Note how enumerations were added to the bottom, *and* the previous enumeration values have now changed meaning.
* [2020 docs](https://web.archive.org/web/20200208191036/https://asiimaging.com/docs/commands/rbmode)
* [docs today](https://asiimaging.com/docs/commands/rbmode)

Since it's not clear exactly what firmware version these changed, it's critical that we get these up-to-date with the latest ASI docs.