--disable-gpl is the upstream default, and using GPL features violates
the license when linking into non-GPL programs.
Enabling it by default breaks user expectations, may cause people to
violate the GPL by mistake.
(From OE-Core rev: ae9273f7e3b6bbf6cbdbdfbd32634cebe5c1b0ce)
Signed-off-by: Yann Dirson <yann@blade-group.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>