Joshua Watt authored Jul 07, 2020 and Stefano Babic committed Jul 08, 2020

Configure the recipe to build swupdate out-of-tree. This is extra
helpful when building with externalsrc or devtool. A bug fix in swupdate
is required for out-of-tree builds to work, so it is currently only
enabled for the git version, and the fix has been brought in there.

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>