test/py: android: Point fdt command to aligned addresses

test/py: android: Point fdt command to aligned addresses

Newer versions of libfdt strictly check whether the FDT blob
passed to them is at 8-byte aligned offset, if it is not, then
the library fails checks with -FDT_ERR_ALIGNMENT . Currently,
'abootimg get dtb --index=1 addr size' may return non 8-byte
aligned FDT address which points directly into the abootimg.
Copy the result into temporary location before validation to
avoid FDT alignment check failure.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@kernel.org>
Link: https://lore.kernel.org/r/20251119193311.127633-2-marek.vasut+renesas@mailbox.org
Signed-off-by: Mattijs Korpershoek <mkorpershoek@kernel.org>