irqchip/ocelot: Add support for Jaguar2 platforms

This patch extends irqchip driver for ocelot to be used with an other
vcoreiii base platform: Jaguar2.

Based on a larger patch from Lars Povlsen <[e-mail]>

Signed-off-by: Gregory CLEMENT <[e-mail]>
Signed-off-by: Marc Zyngier <[e-mail]>
Acked-by: Alexandre Belloni <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/irqchip/irq-mscc-ocelot.c

···
 	.n_irq			= 28,
 };
 
+static struct chip_props jaguar2_props = {
+	.flags			= FLAGS_HAS_TRIGGER,
+	.reg_off_sticky		= 0x10,
+	.reg_off_ena		= 0x18,
+	.reg_off_ena_clr	= 0x1c,
+	.reg_off_ena_set	= 0x20,
+	.reg_off_ident		= 0x38,
+	.reg_off_trigger	= 0x5c,
+	.n_irq			= 29,
+};
+
 static void ocelot_irq_unmask(struct irq_data *data)
 {
 	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(data);
···
 }
 
 IRQCHIP_DECLARE(luton_icpu, "mscc,luton-icpu-intr", luton_irq_init);
+
+static int __init jaguar2_irq_init(struct device_node *node,
+				   struct device_node *parent)
+{
+	return vcoreiii_irq_init(node, parent, &jaguar2_props);
+}
+
+IRQCHIP_DECLARE(jaguar2_icpu, "mscc,jaguar2-icpu-intr", jaguar2_irq_init);