Once the value of SOURCE_DATE_EPOCH is determined, it is stored in the recipe's SDE_FILE.
If none of the existing mechanisms are suitable, replace the do_deploy_source_date_epoch task
with recipe-specific functionality to write the appropriate SOURCE_DATE_EPOCH into the SDE_FILE.
Signed-off-by: Douglas Royds <douglas.royds@taitradio.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
