FreeBSD/src 324cdd9 (r355424)release/arm RPI-B.conf, release/arm64 RPI3.conf

release: chase ports r519089 (rpi-firmware update)

The recent rpi-firmware update renamed "0" to "zero" in the RPi0 DTB
filename

It also included the components needed to boot the RPi4, so install those
now -- interested parties can install sysutils/u-boot-rpi4 and copy
config_rpi4.txt to config.txt on the FAT partition in order to boot the
board. Do note that we currently don't support ethernet/usb/pci.

Reviewed by:    manu
MFC after:      3 days
DeltaFile
+5-3release/arm64/RPI3.conf
+3-3release/arm/RPI-B.conf
+8-62 files

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