With addition of support for version 2 of the FWU metadata structure, the metadata information is collected into a version agnostic structure. Make changes to the FWU functions so that the information that was earlier obtained by reading the metadata structure is now obtained through this version agnostic structure. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> Tested-by: Michal Simek <michal.simek@amd.com>