HAL: Add two new SPI devices

SPIDevice_LSM303D and SPIDevice_L3GD20 added to the enum.
The code has also been formated.

libraries/AP_HAL/AP_HAL_Namespace.h

@@ -47,15 +47,16 @@ namespace AP_HAL {
      */
 
     enum SPIDevice {
-        SPIDevice_Dataflash,
-        SPIDevice_ADS7844,
-        SPIDevice_MS5611,
-        SPIDevice_MPU6000,
-        SPIDevice_ADNS3080_SPI0,
-        SPIDevice_ADNS3080_SPI3,
-        SPIDevice_MPU9250,
-        SPIDevice_LSM9DS0_AM,
-        SPIDevice_LSM9DS0_G
+        SPIDevice_Dataflash         = 0,
+        SPIDevice_ADS7844           = 1,
+        SPIDevice_MS5611            = 2,
+        SPIDevice_MPU6000           = 3,
+        SPIDevice_ADNS3080_SPI0     = 4,
+        SPIDevice_ADNS3080_SPI3     = 5,
+        SPIDevice_MPU9250           = 6,
+        SPIDevice_L3GD20            = 7,
+        SPIDevice_LSM303D           = 8,        
+        SPIDevice_LSM9DS0           = 9
     };
 
 }