libaudiofoundation: get rid of convertion of device type from mask

The limitation of support of devices exceeding 32 and allowing
to store each one as a bit of a bitfield has been removed
(new limitation is 64bits).
The API of the wrapper is now using the DeviceSet type, allowing
to get rid of deviceTypesFromBitMask helper function

Bug: 189469490
Test: make

Signed-off-by: Francois Gaffie <francois.gaffie@renault.com>
Change-Id: Ie7aee28b0b60b9e9fee788c291f06a5fb4693f8e