staging: wfx: flags for SPI IRQ were ignored

The flags declared in the DT were not forwarded to request_irq().

Fixes: a7efb625 ("staging: wfx: use threaded IRQ with SPI")
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20220225112405.355599-11-Jerome.Pouiller@silabs.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>