The commit 39dd329a019b ("mem-buf-msgq: Support multiple msgqs")
mandates to have 'msgq-names' property in node 'mem-buf-msgq'.
Adding default msgq entry to fix probe failure.
Change-Id: Ie882ae87864a0afbed267e4be88573d4c4b41cb3
Signed-off-by: Srinivasarao Pathipati <quic_c_spathi@quicinc.com>