Instead of each i/f having to implement their own meta-data verification and storage, move the logic in common code. This simplifies the i/f code much simpler and compact. Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org> Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Tested-by: Sughosh Ganu <sughosh.ganu@linaro.org>