We know what endianness to use when we're implicitly working with SPARC. Change-Id: I85eaac1da087a8086b9450b762a52323f2498e2e Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/22368 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com> Tested-by: kokoro <noreply+kokoro@google.com>