SYS_COMPANION: add 1500000 baud to metadata & increase the data rate

ROMFS/px4fmu_common/init.d/rc.mavlink

@@ -212,5 +212,5 @@ fi
 #
 if param compare SYS_COMPANION 1500000
 then
-	mavlink start -d ${MAVLINK_COMPANION_DEVICE} -b 1500000 -m onboard -r 10000 -x -f
+	mavlink start -d ${MAVLINK_COMPANION_DEVICE} -b 1500000 -m onboard -r 140000 -x -f
 fi

src/modules/systemlib/system_params.c

@@ -119,6 +119,7 @@ PARAM_DEFINE_INT32(SYS_MC_EST_GROUP, 2);
  * @value 20 Crazyflie (Syslink)
  * @value 921600 Companion Link (921600 baud, 8N1)
  * @value 57600 Companion Link (57600 baud, 8N1)
+ * @value 1500000 Companion Link (1500000 baud, 8N1)
  * @value 157600 OSD (57600 baud, 8N1)
  * @value 257600 Command Receiver (57600 baud, 8N1)
  * @value 319200 Normal Telemetry (19200 baud, 8N1)