- correct clock frequency used in bcm2835 sdhost driver to allow using
raspberrypi-firmware 7fdcd00e00a42a1c91e8bd6f5eb8352fe9358557 and
later without hangs
- detect rpi3 b+ and build lan78xx driver for it
- distro boot support for mvebu 8k
- add workaround for realtek phy on pine64
also remove use of MODPY_ADJ_FILES as suggested by sthen@ a while back