common.xml: added SCALED_PRESSURE3

for 3rd baro. Very useful for new PH2 GPS module

message_definitions/v1.0/common.xml

@@ -2869,6 +2869,13 @@
             <field type="uint8_t" name="transfer_type">The way the autopilot wants to receive the URI. 0 = MAVLink FTP. 1 = binary stream.</field>
             <field type="uint8_t[120]" name="storage">The storage path the autopilot wants the URI to be stored in. Will only be valid if the transfer_type has a storage associated (e.g. MAVLink FTP).</field>
         </message>
+        <message id="143" name="SCALED_PRESSURE3">
+          <description>Barometer readings for 3rd barometer</description>
+          <field type="uint32_t" name="time_boot_ms">Timestamp (milliseconds since system boot)</field>
+          <field type="float" name="press_abs">Absolute pressure (hectopascal)</field>
+          <field type="float" name="press_diff">Differential pressure 1 (hectopascal)</field>
+           <field type="int16_t" name="temperature">Temperature measurement (0.01 degrees celsius)</field>
+        </message>
         <message id="146" name="CONTROL_SYSTEM_STATE">
             <description>The smoothed, monotonic system state used to feed the control loops of the system.</description>
             <field type="uint64_t" name="time_usec">Timestamp (micros since boot or Unix epoch)</field>