ras-arm-handler: cope with latest upstream changes

ras-arm-handler: cope with latest upstream changes

Unfortunately, rasdaemon support for the firmware first
CPER ARM processor extended trace was added years before
having it merged upstream. That's bad, specially since
upstream revision requested a change on some fields.

Fix support for it by aligning with latest upstream version:
        https://lore.kernel.org/linux-edac/3853853f820a666253ca8ed6c7c724dc3d50044a.1720679234.git.mchehab+huawei@kernel.org/T/#m17003e47912b228e91e57ac6e4f90ea30061aa3b

A backward-compatible logic was added to avoid breaking with
existing OOT support.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>