bmp388: cleanup main and add to px4_fmu-v5x board_config.h

boards/px4/fmu-v5x/src/board_config.h

@@ -276,6 +276,13 @@
 #define PX4_I2C_BUS_ONBOARD         4
 #define PX4_I2C_BUS_LED             PX4_I2C_BUS_EXPANSION
 
+/* Devices on the onboard bus.
+ *
+ * Note that these are unshifted addresses.
+ */
+#define PX4_I2C_OBDEV_BMP388        0x76
+#define PX4_I2C_OBDEV_A71CH         0x49
+
 #define BOARD_NUMBER_I2C_BUSES      4
 #define BOARD_I2C_BUS_CLOCK_INIT    {100000, 100000, 100000, 100000}