jbranso/cports: Adding in a gpg package for chimera linux. The below may not work for you at all. add in this file: /etc/apk/repositories.d/02-repo-gpg.list with this content: https://notabug.org/jbranso/cports/packages/contrib

Daniel Kolesa 1fe8d3cc03 contrib/atf-rk3399-bl31: update to 2.8.1		1 year ago
..
patches	4026a88d25 contrib/atf-rk3399-bl31: use 1500000 baud	2 years ago
template.py	1fe8d3cc03 contrib/atf-rk3399-bl31: update to 2.8.1	1 year ago
update.py	fa09788ff1 contrib/atf-rk3399-bl31: fix update-check	2 years ago