Package was disabled with commit
8035ea0a71 because of missing features
in uClibc-ng. In uClibc-ng 1.0.47 the missing feature were added,
so enable shadow again.
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>