drivers: usb_dc_nrfx: use REQTYPE_GET_DIR and REQTYPE_GET_TYPE macros
drivers: usb_dc_nrfx: use REQTYPE_GET_DIR and REQTYPE_GET_TYPE macros

Use REQTYPE_GET_DIR and REQTYPE_GET_TYPE macros from
USB subsystem instead of specially introduced.

Signed-off-by: Johann Fischer <b39b26e1812eb092eb217277792f3735321fa456@phytec.de>

Vudentz/zephyr,galak/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,nashif/zephyr,finikorg/zephyr,nashif/zephyr,nashif/zephyr,Vudentz/zephyr,galak/zephyr,Vudentz/zephyr,finikorg/zephyr,finikorg/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,nashif/zephyr,Vudentz/zephyr,zephyrproject-rtos/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,finikorg/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,galak/zephyr