Merge pull request #7831 from hasnainvirk/rx2_dr_default

LoRaWAN: Restoring default RX2 data rate

Author: Cruz Monrreal

features/lorawan/lorastack/phy/LoRaPHY.cpp

@@ -522,8 +522,7 @@ void LoRaPHY::reset_to_default_values(loramac_protocol_params *params, bool init
 
     params->sys_params.rx2_channel.frequency = get_default_rx2_frequency();
 
-    // RX2 data rate should also start from the maximum
-    params->sys_params.rx2_channel.datarate = get_default_max_tx_datarate();
+    params->sys_params.rx2_channel.datarate = get_default_rx2_datarate();
 
     params->sys_params.uplink_dwell_time = phy_params.ul_dwell_time_setting;