Better handling of DELAY_NS and DELAY_US (#10716)

Marlin/src/HAL/Delay.h

Marlin/src/HAL/HAL_DUE/HAL_spi_Due.cpp

Marlin/src/HAL/HAL_LPC1768/HAL.cpp

Marlin/src/HAL/HAL_LPC1768/HAL.h

Marlin/src/HAL/HAL_LPC1768/SoftwareSerial.cpp

Marlin/src/HAL/HAL_LPC1768/arduino.cpp

...68/u8g_com_HAL_LPC1768_ssd_sw_i2c.cpp under construction

Marlin/src/core/macros.h

Marlin/src/feature/Max7219_Debug_LEDs.cpp

Marlin/src/feature/dac/dac_dac084s085.cpp

Marlin/src/inc/Conditionals_LCD.h

Marlin/src/lcd/dogm/ultralcd_st7920_u8glib_rrd_AVR.cpp

Marlin/src/module/stepper.cpp

Marlin/src/module/temperature.cpp

Marlin/src/pins/pins_ANET_10.h

Marlin/src/pins/pins_MELZI_CREALITY.h

Marlin/src/pins/pins_MELZI_MALYAN.h

Marlin/src/pins/pins_MELZI_TRONXY.h

Marlin/src/pins/pins_PRINTRBOARD_REVF.h

Marlin/src/pins/pins_SANGUINOLOLU_11.h