The function (preprocessor macro) we need is defined in <endian.h> not <swab.h>. Change-Id: I3a86c7050bf853e3a56a15421132240e19f40912 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/31704 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>