crossystem: Let kernel worry about active_low stuff
crossystem: Let kernel worry about active_low stuff

As kernel has adjusted the value of /sys/class/gpio/gpio${PORT}/ with
active_low stuff before returning it to user, crossystem should not do
another adjustment.

Signed-off-by: Che-Liang Chiou <57969107b634cf11cb64e9d768fd46929066adab@chromium.org>

BUG=chrome-os-partner:11297
TEST=On Snow, run crossystem and see wpsw_boot equals to wpsw_cur.
     Then invert /sys/class/gpio/gpio${PORT}/active_low value, and
     see wpsw_boot does not equal to wpsw_cur.

Change-Id: I09fec89788bc4393775d5cf9763b8cebeb645ad4
Reviewed-on: https://gerrit.chromium.org/gerrit/27252
Commit-Ready: Che-Liang Chiou <57969107b634cf11cb64e9d768fd46929066adab@chromium.org>
Tested-by: Che-Liang Chiou <57969107b634cf11cb64e9d768fd46929066adab@chromium.org>
Reviewed-by: Bill Richardson <129945214b1d548d8e49b6c29c43094f8c78057f@chromium.org>

marineam/seismograph,coreboot/vboot,acorn-marvell/vboot_reference,ionave/seismograph,geekboxzone/mmallow_external_vboot_reference,acorn-marvell/vboot_reference,acorn-marvell/vboot_reference,ccaapton/vboot_reference,marineam/seismograph,ionave/seismograph,geekboxzone/mmallow_external_vboot_reference,ccaapton/vboot_reference,coreboot/vboot,marineam/seismograph,ionave/seismograph,ccaapton/vboot_reference,geekboxzone/mmallow_external_vboot_reference,geekboxzone/mmallow_external_vboot_reference,acorn-marvell/vboot_reference,coreboot/vboot,ccaapton/vboot_reference,coreboot/vboot,marineam/seismograph,coreboot/vboot,geekboxzone/mmallow_external_vboot_reference