LE patches generally follow <package>-<number>-description.patch but it depends on who created them and where they are used, e.g. for Amlogic kernel stuff I'm generating patches using "git format-patch" so things are number sequenced; other maintainers bundle patches together into large sets (which I don't like, but each to their own). Regardless of the naming convention the build-system applies patches in alphanumeric sequence.
If you intention is to submit the patches to our git repo; be advised that we will not accept/merge them unless we can see the same patches on a kernel and/or u-boot mailing list with acks from maintainers, i.e. we will accept a backport of an upstream accepted patch, we will not accept an orphan patch that only exists in LE (else we will never get to drop the patch in a future kernel/u-boot bump).