Alex (sukovalex/kerber) was creating OE builds for some Amlogic (not Amilog) based boxes in the past (and maybe LE builds in the near-future) and has private access to some reverse engineered DVB driver code that is not currently available in any LE builds, but once the driver code has evolved further the code should be made public (under GPL) and we can maybe include support. There are no guarantees on when that will happen.
Generally LE (and OE before) supports a range of DVB devices; particularly USB devices that could be used on a variety of platforms (not just Amlogic) but there are many DVB devices from many vendors in circulation (more than we can keep track of) so we cannot give a more specific answer on support unless you tell us the specific chipset that's inside a specific box.