x86: Constify irqdomain ops

Nothing changes those ops. Make the initializers readable while at it.
Reported-by: NKrzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

arch/x86/kernel/apic/htirq.c

@@ -143,7 +143,7 @@ static void htirq_domain_deactivate(struct irq_domain *domain,
 	write_ht_irq_msg(irq_data->irq, &msg);
 }
 
-static struct irq_domain_ops htirq_domain_ops = {
+static const struct irq_domain_ops htirq_domain_ops = {
 	.alloc		= htirq_domain_alloc,
 	.free		= htirq_domain_free,
 	.activate	= htirq_domain_activate,

arch/x86/kernel/apic/vector.c

@@ -330,7 +330,7 @@ static int x86_vector_alloc_irqs(struct irq_domain *domain, unsigned int virq,
 	return err;
 }
 
-static struct irq_domain_ops x86_vector_domain_ops = {
+static const struct irq_domain_ops x86_vector_domain_ops = {
 	.alloc	= x86_vector_alloc_irqs,
 	.free	= x86_vector_free_irqs,
 };

arch/x86/platform/uv/uv_irq.c

@@ -149,7 +149,7 @@ static void uv_domain_deactivate(struct irq_domain *domain,
 	uv_program_mmr(irqd_cfg(irq_data), irq_data->chip_data);
 }
 
-static struct irq_domain_ops uv_domain_ops = {
+static const struct irq_domain_ops uv_domain_ops = {
 	.alloc		= uv_domain_alloc,
 	.free		= uv_domain_free,
 	.activate	= uv_domain_activate,