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.

Change-Id: I2f6817ca198bf923671a7aa67e956e5477d71848
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/22385
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
3 files changed