Use the acpi_is_wakeup_s3() API instead of comparing a raw value to a global variable. This allows for easier refactoring. Change-Id: I2813b5d275cbe700be713272e3a88fdb5759db99 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/15690 Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Lee Leahy <leroy.p.leahy@intel.com> Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>