pawlet-hwinfo is now a C++ binary. It reads the bootloader git hash and
build-timestamp from the chosen/bootloader device-tree node and queries the
VideoCore firmware revision, hash and variant over the /dev/vcio mailbox.
Both are formatted date-first like vcgencmd/rpi-eeprom-update.
pawlet-memtier reads MemTotal with shell builtins instead of awk, which is
labelled vendor_file and not executable from the memtier domain.
oxmc
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