Backport of "sdp: gstmikey: gst_mikey_message_to_caps: extract ROC from first crypto session" into 1.22
requested to merge tpm/gstreamer:backport-mr-3568-into-1.22-feature-gstmikey-extract-roc-and-salt into 1.22
Backport of !3568 (merged) "sdp: gstmikey: gst_mikey_message_to_caps: extract ROC from first crypto session".
Commits: