The commits in Digi clone have been merged to the public
libsoc repo.
Adjust the SRCREV to the latest available commit at the moment
(545b354968a9d03008e1e86e14c58e3f8423a20c) and remove the
dependency with Digi clone.
Signed-off-by: Hector Palacios <hector.palacios@digi.com>
https://onedigi.atlassian.net/browse/DEL-8218