platform/x86: thinkpad_acpi: Use false to set acpi_send_ev to false

acpi_send_ev is a bool and everywhere else true/false is used
to set it. Replace the one instance using 0 with false.

Suggested-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20240429093446.130322-1-hdegoede@redhat.com