LMSDevice: Reduce Rx logging verbosity: Only log unexpected timestamps

Change-Id: I06b35efb7368616b9f4d348da574cd524ffe3ea6
diff --git a/Transceiver52M/device/lms/LMSDevice.cpp b/Transceiver52M/device/lms/LMSDevice.cpp
index 5f25da5..2a40f46 100644
--- a/Transceiver52M/device/lms/LMSDevice.cpp
+++ b/Transceiver52M/device/lms/LMSDevice.cpp
@@ -483,7 +483,8 @@
 	for (i = 0; i<chans; i++) {
 		thread_enable_cancel(false);
 		rc = LMS_RecvStream(&m_lms_stream_rx[i], bufs[i], len, &rx_metadata, 100);
-		LOG(ALERT) << "chan "<< i << " recv buffer of len " << rc << " expect " << std::hex << timestamp << " got " << std::hex << (TIMESTAMP)rx_metadata.timestamp << " (" << std::hex << rx_metadata.timestamp <<") diff=" << rx_metadata.timestamp - timestamp;
+		if (timestamp != (TIMESTAMP)rx_metadata.timestamp)
+			LOG(ALERT) << "chan "<< i << " recv buffer of len " << rc << " expect " << std::hex << timestamp << " got " << std::hex << (TIMESTAMP)rx_metadata.timestamp << " (" << std::hex << rx_metadata.timestamp <<") diff=" << rx_metadata.timestamp - timestamp;
 		if (rc != len) {
 			LOG(ALERT) << "LMS: Device receive timed out";
 		}