Major formatting/whitespace cleanup

apps/drivers/bma180/bma180.cpp

apps/drivers/boards/px4fmu/px4fmu_adc.c

apps/drivers/boards/px4fmu/px4fmu_can.c

apps/drivers/boards/px4fmu/px4fmu_init.c

apps/drivers/boards/px4fmu/px4fmu_spi.c

apps/drivers/boards/px4fmu/px4fmu_usb.c

apps/drivers/device/device.h

apps/drivers/device/i2c.cpp

apps/drivers/device/i2c.h

apps/drivers/device/spi.cpp

apps/drivers/device/spi.h

apps/drivers/drv_accel.h

apps/drivers/drv_gyro.h

apps/drivers/drv_hrt.h

apps/drivers/drv_mag.h

apps/drivers/drv_pwm_output.h

apps/drivers/drv_sensor.h

apps/drivers/drv_tone_alarm.h

apps/drivers/hmc5883/hmc5883.cpp

apps/drivers/l3gd20/l3gd20.cpp