update according to pull request review comments

platforms/posix/cmake/px4_impl_os.cmake

posix-configs/bbblue/px4.config

src/drivers/linux_pwm_out/bbblue_pwm_rc.cpp

src/drivers/linux_sbus/linux_sbus.cpp

src/modules/mavlink/mavlink_main.cpp

src/modules/mavlink/mavlink_main.h

src/modules/sensors/sensor_params_battery.c

src/modules/sensors/voted_sensors_update.cpp