feat(fwu): add a config flag for including image info in the FWU metadata

The version 2 of the FWU metadata structure is designed such that the
information on the updatable images can be omitted from the metadata
structure. Add a configuration flag, PSA_FWU_METADATA_FW_STORE_DESC,
which is used to select whether the metadata structure has this
information included or not. It's value is set to 1 by default.

Change-Id: I4463a20c94d2c745ddb0b2cc8932c12d418fbd42
Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
2 files changed