src/update_handler: add image information to run_slot_hook
src/update_handler: add image information to run_slot_hook

This will allow passing image related information to the slot hooks in a future
commit.

Signed-off-by: Marcel Hellwig <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@cookiesoft.de>
Signed-off-by: Jan Luebbe <3a82f1ac4ad59607a20f180f1c67ac8ba31ad0d5@pengutronix.de>

rauc/rauc,jluebbe/rauc,rauc/rauc,ejoerns/rauc,jluebbe/rauc,ejoerns/rauc,rauc/rauc,ejoerns/rauc,jluebbe/rauc