dmagent: pass readonly flag
dmagent: pass readonly flag

OXT-118

Signed-off-by: Chris Patterson <b8fb6d90d187509a6a522affebf31fb67d9f840b@ainfosec.com>

OpenXT/toolstack,OpenXT/toolstack,crogers1/toolstack,crogers1/toolstack,eric-ch/toolstack,eric-ch/toolstack,ktemkin/openxt-toolstack,ktemkin/openxt-toolstack