trailblazer testing

Introduce a linux-next kernel with postmarketOS configs and some additional device specific configs enabled.

This kernel package will be updated daily to the latest -next tag. breakages expected. It is designed to be used in tandem with a generic ARM64 device package to provide a bleeding edge option for those with EFI capable bootloaders.

Signed-off-by: Caleb Connolly caleb@postmarketos.org