Add command to display Android binder driver information

[gsingh93]

Adds the binder command to display information related to the Binder driver on Android devices:

It works well, but the code is a mess and needs to be cleaned up before merging.

[Notselwyn]

Any updates here? Seems like a great feature to upstream, as I missed this significantly during kernel research.

[gsingh93]

Thanks for the interest @Notselwyn. It's unlikely I'll get time to work on this in the near future as I wrote it for some security research that's been completed, so I don't have any bandwidth to return to it. I uploaded it here in an unfinished state because I thought at least anyone interested could still use it, which would be better than keeping it to myself.

I'd be hesitant to merge it as is, as there are a number of unimplemented things and likely broken edge cases. We'd get bug reports from users that we wouldn't be able to support. But hopefully someone else will be able to pick it up at some point.