platform/x86: intel_chtdc_ti_pwrbtn: Fix missing IRQF_ONESHOT as only threaded handler

Coccinelle noticed:
  drivers/platform/x86/intel_chtdc_ti_pwrbtn.c:59:7-32: ERROR: Threaded IRQ
with no primary handler requested without IRQF_ONESHOT

Signed-off-by: Guangqing Zhu <zhuguangqing83@gmail.com>
Link: https://lore.kernel.org/r/20210415091435.10486-1-zhuguangqing83@gmail.com


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