Merge branch 'cleanup/dts-subdirs' into next/arm64

arch/arm/Makefile

arch/arm/boot/dts/Makefile

arch/arm64/Makefile

arch/arm64/boot/dts/Makefile

arch/arm64/boot/dts/apm/Makefile

arch/arm64/boot/dts/apm/apm-mustang.dts

arch/arm64/boot/dts/apm/apm-storm.dtsi

arch/arm64/boot/dts/arm/Makefile

arch/arm64/boot/dts/arm/foundation-v8.dts

arch/arm64/boot/dts/arm/rtsm_ve-aemv8a.dts

arch/arm64/boot/dts/arm/rtsm_ve-motherboard.dtsi

arch/arm64/boot/dts/cavium/Makefile

arch/arm64/boot/dts/cavium/thunder-88xx.dts

arch/arm64/boot/dts/cavium/thunder-88xx.dtsi

scripts/Kbuild.include

scripts/Makefile.dtbinst

scripts/Makefile.lib