platform/x86: wmi: Update WMI driver API documentation

The WMI driver core now passes the WMI event data to legacy notify
handlers, so WMI devices sharing notification IDs are now being
handled properly.

Fixes: e04e2b76 ("platform/x86: wmi: Pass event data directly to legacy notify handlers")
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20241005213825.701887-1-W_Armin@gmx.de


Signed-off-by: Hans de Goede <hdegoede@redhat.com>