Quick test built in sensors "MS5611" and "HMC5883"

NOTE : "i2c" command need to be perform first !

Test steps :

NuttShell (NSH)
nsh> uorb start
[uorb] ready
nsh> i2c
Detecting on board sensors on I2C bus(I2C2) ......

( 0x62 ) Have PCA9533DP
( 0x41 ) Have PCA9536DP
( 0x69 ) Have MPU6050

  Set MPU6050 auxiliary I2C bus to bypass mode......

  Detecting sensors on MPU6050 auxiliary I2C bus......

  ( 0x1e ) Have HMC5883L
  ( 0x77 ) Have MS5611

i2c: Done

nsh> ms5611 start
[MS5611_I2C] on I2C bus 2 at 0x77
nsh> hmc5883 start
[HMC5883] on I2C bus 2 at 0x1e
nsh> tests sensors
Running sensors tests:

  sensor: accel
        ACCEL: test start
        ACCEL: open fail, run <mpu6000 start> or <lsm303 start> or <bma180 start> first.
  sensor: gyro
        GYRO: test start
        GYRO: open fail, run <l3gd20 start> or <mpu6000 start> first.
  sensor: mag
        MAG: test start
        MAG values: x: -0.1009  y:  1.6358      z:  1.7486
        OK: MAG passed all tests successfully
  sensor: baro
        BARO: test start
        BARO pressure: 1009.7300 mbar   alt:  29.3422 m temp:  37.0000 deg C
        OK: BARO passed all tests successfully

Signed-off-by: cctsao1008 <chiacheng.tsao@gmail.com>