irqchip/qcom-irq-combiner: Fix section mismatch

Platform drivers can be probed after their init sections have been
discarded so the probe callback must not live in init.

Fixes: f20cc9b ("irqchip/qcom: Add IRQ combiner driver")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

Author: jhovold

drivers/irqchip/qcom-irq-combiner.c

@@ -222,7 +222,7 @@ static int get_registers(struct platform_device *pdev, struct combiner *comb)
 	return 0;
 }
 
-static int __init combiner_probe(struct platform_device *pdev)
+static int combiner_probe(struct platform_device *pdev)
 {
 	struct combiner *combiner;
 	int nregs;