staging: wilc1000: use 'interrupts' property instead of 'irq-gpio'

Make use of 'interrupts' property instead of using gpio for handling
the interrupt as suggested in [1].

[1]. https://lore.kernel.org/linux-wireless/20200303015558.GA6876@bogus



Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Link: https://lore.kernel.org/r/20200307085523.7320-2-ajay.kathat@microchip.com


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