irqchip/irq-imx-gpcv2: Remove unused code

Varaible 'reg' in imx_gpcv2_irq_set_wake() has no users. Remove it.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: cphealy@gmail.com
Cc: l.stach@pengutronix.de
Cc: Leonard Crestez <leonard.crestez@nxp.com>
Cc: "A.s. Dong" <aisheng.dong@nxp.com>
Cc: Richard Zhu <hongxing.zhu@nxp.com>
Cc: linux-imx@nxp.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

drivers/irqchip/irq-imx-gpcv2.c

@@ -73,11 +73,9 @@ static int imx_gpcv2_irq_set_wake(struct irq_data *d, unsigned int on)
 	struct gpcv2_irqchip_data *cd = d->chip_data;
 	unsigned int idx = d->hwirq / 32;
 	unsigned long flags;
-	void __iomem *reg;
 	u32 mask, val;
 
 	raw_spin_lock_irqsave(&cd->rlock, flags);
-	reg = cd->gpc_base + cd->cpu2wakeup + idx * 4;
 	mask = 1 << d->hwirq % 32;
 	val = cd->wakeup_sources[idx];