arm64: dts: Add/fix /memory node unit-addresses

arm64: dts: Add/fix /memory node unit-addresses

'/memory' nodes always have a 'reg' property, and therefore should have
a unit-address with just plain hex (i.e. no commas). Fix all the arm64
'/memory' nodes.

It's possible that some bootloader depends on /memory (arm32 ATAG to DT
code does for example). If so, the memory node should be commented with
that requirement.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Chanho Min <chanho.min@lge.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240430191856.874600-2-robh@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>