Add IRQ IORESOURCE for rtc sub driver of this device.
The rtc driver can get the irq by calling platform_get_irq().
Signed-off-by: NLaxman Dewangan <ldewangan@nvidia.com>
Reviewed-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>