[PATCH] Add livepatch kselftests

Hi all, This patch was motivated by the increasing corner cases in the livepatch code. These tests don't cover anywhere near all of them, but were mostly already written up as demonstrations / documentation of the livepatch callback functionality. Converting them into a test rig didn't take

[PATCH] Add livepatch kselftests

Hi all, This patch was motivated by the increasing corner cases in the livepatch code. These tests don't cover anywhere near all of them, but were mostly already written up as demonstrations / documentation of the livepatch callback functionality. Converting them into a test rig didn't take