plugin-api: update-control: Refactor to allocate functions memory in api function...

plugin-api: update-control: Refactor to allocate functions memory in api function for ABI

Previously, function structure was created in the backend and the api
function used it. But this method depends the function structure to the
backend, so it can break the abi rule.
To resolve this issue, update-control is refactored to allocate the
function structure and give it to the backend to fill the required
functions.

Change-Id: Icd92dd2dc9342f94bd7d98a3e34519f4fb7b53e8
Signed-off-by: SangYoun Kwak <sy.kwak@samsung.com>