platform/x86: dell-wmi: Ignore suspend notifications

Some machines like the Dell G15 5155 emit WMI events when
suspending/resuming. Ignore those WMI events.

Tested-by:  <siddharth.manthan@gmail.com>
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Acked-by: Pali Rohár <pali@kernel.org>
Link: https://lore.kernel.org/r/20241014220529.397390-1-W_Armin@gmx.de


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