implement PWT buzzer driver The piece implemented here is the low-level driver component; there will also be a higher-level buzzer melody player service, to be implemented in RiViera land, that will be the sole caller of PWT API functions provided by the present driver.

all:	fwimage.bin flash-script

${SUBDIR}: FRC
	cd $@; ${MAKE} ${MFLAGS}

${LIBS}:	${SUBDIR}
	@true