platform/x86: asus-wmi: Document the egpu_enable sysfs attribute

The egpu_enable attribute was not documented, this adds the
required documentation.

Fixes: 382b91db80 ("asus-wmi: Add egpu enable method")
Signed-off-by: Luke D. Jones <luke@ljones.dev>
Link: https://lore.kernel.org/r/20220812222509.292692-3-luke@ljones.dev
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Luke D. Jones 2022-08-13 10:25:05 +12:00 • committed by Hans de Goede
commit 3206376f09