bcm63xx: periph_intc: report effective affinity

The bcm6345-periph-intc driver only targets a single CPU at a time, even
if the notional affinity is wider. Let's inform the core code about this.

This patch gets rid of the kernel message:
"genirq: irq_chip bcm6345-periph-intc did not update eff. affinity mask
of irq 52"

Signed-off-by: Daniel Gonzalez Cabanelas <dgcbueu@gmail.com>

target/linux/bcm63xx/patches-5.4/326-irqchip-bcm6345-report-eff-affinity.patch

@@ -0,0 +1,20 @@
+--- a/drivers/irqchip/irq-bcm6345-periph.c
++++ b/drivers/irqchip/irq-bcm6345-periph.c
+@@ -186,6 +186,8 @@ static int bcm6345_periph_set_affinity(s
+ 	}
+ 	raw_spin_unlock_irqrestore(&priv->lock, flags);
+ 
++	irq_data_update_effective_affinity(data, cpumask_of(cpu));
++
+ 	return 0;
+ }
+ #endif
+@@ -197,6 +199,8 @@ static int bcm6345_periph_map(struct irq
+ 
+ 	irq_set_chip_and_handler(irq, &priv->chip, handle_level_irq);
+ 
++	irqd_set_single_target(irq_desc_get_irq_data(irq_to_desc(irq)));
++
+ 	return 0;
+ }
+