Replace sleep with px4_sleep

src/drivers/pwm_out_sim/PWMSim.cpp

src/examples/hello/hello_example.cpp

src/include/visibility.h

src/lib/cdev/test/cdevtest_example.cpp

src/modules/commander/accelerometer_calibration.cpp

src/modules/commander/airspeed_calibration.cpp

src/modules/commander/rc_check.cpp

src/platforms/apps.cpp.in

src/platforms/px4_time.h

src/systemcmds/pwm/pwm.cpp

src/systemcmds/tests/hrt_test/hrt_test.cpp

src/systemcmds/tests/test_uart_console.c

src/systemcmds/top/top.c