arch-arm: Fix big endian support in {Load,Store}Double64

{Load, Store}Double64 didn't consider some of the big-endian
situations. Added big-endian related data conversions to correct them.

Change-Id: I8840613f94446e6042276779d1f02350ab57987f
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/8145
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2 files changed