Recognize AML Meson8 baby platform - S805 chip

Recognize Amlogic S805 chip, will need it for deciding if we should play h265 or not (S805 supports it, S802 doesn't). I don't have any S805 board here at the moment so will not make any changes to AMLCodec. Will get one within week or two then I can test and PR AMLCodec changes.
As an alternative, you could test for 8B inside the 8 block like I did for MXS.  See, https://github.com/t-nelson/xbmc/commit/ed1c7f317670630ba071212c685b0b4de8e3d92c#diff-2ad985826c1f9fa21dda36fc423b407cR174

Just make sure you only ever set ```aml_device_type``` once, to avoid races.