irqchip/mmp: Prepare icu_mux_irq_demux for irq argument removal

The irq argument of most interrupt flow handlers is unused or merily
used instead of a local variable. The handlers which need the irq
argument can retrieve the irq number from the irq descriptor.

Search and update was done with coccinelle and the invaluable help of
Julia Lawall.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>

drivers/irqchip/irq-mmp.c

@@ -129,8 +129,9 @@ struct irq_chip icu_irq_chip = {
 	.irq_unmask	= icu_unmask_irq,
 };
 
-static void icu_mux_irq_demux(unsigned int irq, struct irq_desc *desc)
+static void icu_mux_irq_demux(unsigned int __irq, struct irq_desc *desc)
 {
+	unsigned int irq = irq_desc_get_irq(desc);
 	struct irq_domain *domain;
 	struct icu_chip_data *data;
 	int i;