Revert "skip the disabled backlight device"
This reverts commits 86c3548d and 5c0d35ca. Not all raw interfaces have device/enabled under the backlight sysfs interface. Some examples are nvidia-bl and acpi_video0, they are raw interfaces but doesn't have device/enabled properties. Overall we can just return true even if file doesn't exist but then this code serves no purpose. BUG: 381114 BUG: 381199 Ackd-by: Kai Uwe Broulik <firstname.lastname@example.org> CCMAIL: AceLan Kao <email@example.com>
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