[osx] Support planar audio devices in the core audio sink.
[cosmetics] indenting
Merge pull request #4712 from jmarshallnz/ca_planar

[osx] support planar audio devices in core audio OSX sink
ActiveAE: allow sinks to return planar formats
fix: &(foo[0]) != foo
[osx] adapt to use AE_FMT_FLOATP for planar audio
[cosmetics] indenting