boards/common/nrf52: include Makefile.board.dep in hack
boards/common/nrf52: include Makefile.board.dep in hack

nrf52 includes include $(RIOTBOARD)/$(BOARD)/Makefile.dep to know
if `nordic_softdevice_ble` is used, this changes dependency
resolution sinnce -include $(APPDIR)/Makefile.board.dep should
be resolved before.

This can be removed once #9913 is if `nordic_softdevice` is
deprecated.

miri64/RIOT,OlegHahm/RIOT,kaspar030/RIOT,kaspar030/RIOT,kaspar030/RIOT,basilfx/RIOT,kYc0o/RIOT,OlegHahm/RIOT,miri64/RIOT,yogo1212/RIOT,yogo1212/RIOT,jasonatran/RIOT,miri64/RIOT,kYc0o/RIOT,basilfx/RIOT,OTAkeys/RIOT,OlegHahm/RIOT,OTAkeys/RIOT,OTAkeys/RIOT,yogo1212/RIOT,authmillenon/RIOT,miri64/RIOT,ant9000/RIOT,jasonatran/RIOT,yogo1212/RIOT,basilfx/RIOT,ant9000/RIOT,ant9000/RIOT,kaspar030/RIOT,yogo1212/RIOT,jasonatran/RIOT,RIOT-OS/RIOT,ant9000/RIOT,RIOT-OS/RIOT,basilfx/RIOT,authmillenon/RIOT,OlegHahm/RIOT,OTAkeys/RIOT,miri64/RIOT,basilfx/RIOT,authmillenon/RIOT,jasonatran/RIOT,kYc0o/RIOT,kYc0o/RIOT,RIOT-OS/RIOT,RIOT-OS/RIOT,OlegHahm/RIOT,authmillenon/RIOT,kaspar030/RIOT,ant9000/RIOT,jasonatran/RIOT,authmillenon/RIOT,authmillenon/RIOT,RIOT-OS/RIOT,OTAkeys/RIOT,yogo1212/RIOT,kYc0o/RIOT