Promiscuous scanners #784

Job	Run time
build (--soc=BCM2835 --driver=RPi)	27s
build (--soc=BCM2836 --driver=RPi)	27s
build (--driver=SPIDEV)	16s
build (--driver=MRAA)	25s
build (--driver=pigpio)	23s
using_cmake (arm64, aarch64-linux-gnu, MRAA) / build	33s
using_cmake (arm64, aarch64-linux-gnu, pigpio) / build	27s
using_cmake (arm64, aarch64-linux-gnu, RPi) / build	27s
using_cmake (arm64, aarch64-linux-gnu, SPIDEV) / build	29s
using_cmake (armhf, arm-linux-gnueabihf, MRAA) / build	31s
using_cmake (armhf, arm-linux-gnueabihf, SPIDEV) / build	23s
using_cmake (armhf, arm-linux-gnueabihf, pigpio) / build	29s
using_cmake (armhf, arm-linux-gnueabihf, RPi) / build	35s
using_cmake (default, local, MRAA) / build	1m 1s
using_cmake (default, local, RPi) / build	33s
using_cmake (default, local, SPIDEV) / build	35s
using_cmake (wiringPi, default, local) / build	41s
	8m 42s

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