fs: add all recursive dependencies to packages list

fs: add all recursive dependencies to packages list

Currently, only first-level dependencies of a filesystem are added to
the global list of packages, thus missing all recursive dependencies.

Use the newly introduced recursive variable instead, which already
contains the rootfs-common dependencies too.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Thomas De Schampheleire <patrickdepinguin@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>