irqchip: Use of_property_read_bool() for boolean properties

It is preferred to use typed property access functions (i.e.
of_property_read_<type> functions) rather than low-level
of_get_property/of_find_property functions for reading properties.
Convert reading boolean properties to to of_property_read_bool().

Signed-off-by: Rob Herring <[e-mail]>
Acked-by: Guo Ren <[e-mail]> (csky)
Signed-off-by: Marc Zyngier <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/irqchip/irq-csky-apb-intc.c

···
 	gc->chip_types[0].chip.irq_mask = irq_gc_mask_clr_bit;
 	gc->chip_types[0].chip.irq_unmask = irq_gc_mask_set_bit;
 
-	if (of_find_property(node, "csky,support-pulse-signal", NULL))
+	if (of_property_read_bool(node, "csky,support-pulse-signal"))
 		gc->chip_types[0].chip.irq_unmask = irq_ck_mask_set_bit;
 }
 

drivers/irqchip/irq-gic-v2m.c

···
 		u32 spi_start = 0, nr_spis = 0;
 		struct resource res;
 
-		if (!of_find_property(child, "msi-controller", NULL))
+		if (!of_property_read_bool(child, "msi-controller"))
 			continue;
 
 		ret = of_address_to_resource(child, 0, &res);