spi25: Enable native 4BA read and write using feature bits

Prefer the native 4BA instruction when they are supported. In this
case, override our logic to decide to use a 4BA address.

Backport upstream `commit a1672f829`.

TEST=still builds

Change-Id: I9dc26b35017de9efcd7de0b5fb510346f32db100
Signed-off-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/flashrom/+/1667514
Reviewed-by: Stefan Reinauer <reinauer@google.com>
3 files changed