samples: ipc: Add logs in openamp rsc table loops

Add logs in both of the openamp rsc table loops to stick with
what is shown in Zephyr documentation. Prefix each message with the loop
name and unify logs with those from rpmsg_client_sample module.

Signed-off-by: Marc-Antoine Riou <marc-antoine.riou@iot.bzh>
1 file changed