apparmor: pass cred through to audit info.

apparmor: pass cred through to audit info.

[ Upstream commit 90c436a64a6e20482a9a613c47eb4af2e8a5328e ]

The cred is needed to properly audit some messages, and will be needed
in the future for uid conditional mediation. So pass it through to
where the apparmor_audit_data struct gets defined.

Reviewed-by: Georgia Garcia <georgia.garcia@canonical.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
Stable-dep-of: 157a3537d6bc ("apparmor: Fix regression in mount mediation")
Signed-off-by: Sasha Levin <sashal@kernel.org>