net: qrtr: haven: Add bounds check in rx path

Validate the values read from shared memory in the receive path.
In the case where a VM is misbehaving, the qrtr haven transport
should return immediately and print a warning.

Change-Id: Ieccd3f99ec0cf321f136600760e7f66e125f765a
Signed-off-by: Sarannya S <quic_sarannya@quicinc.com>