package/libubootenv: needs libyaml
Fixes:
http://autobuild.buildroot.net/results/cc1/cc141c81fd00ca3ece1c33b9659cce93dd5222a9/
Makefile:576: *** libyaml is in the dependency chain of libubootenv that
has added it to its _DEPENDENCIES variable without selecting it or
depending on it from Config.in. Stop.
This error was introduced by buildroot commit
9325ba4754fea800658bb3aec99f28bba3d2acf3.
Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>