Similar to of_irq_to_resource_table(), add a default implementation of
of_irq_to_resource() for systems that don't have CONFIG_OF_IRQ defined.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mark Hasemeyer <markhas@chromium.org>
---

Changes in v4:
-Add Rob's Ack tag from v2

 include/linux/of_irq.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h
index d6d3eae2f1452..0d73b2ca92d31 100644
--- a/include/linux/of_irq.h
+++ b/include/linux/of_irq.h
@@ -34,8 +34,6 @@ static inline int of_irq_parse_oldworld(const struct device_node *device, int in
 
 extern int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq);
 extern unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data);
-extern int of_irq_to_resource(struct device_node *dev, int index,
-			      struct resource *r);
 
 #ifdef CONFIG_OF_IRQ
 extern void of_irq_init(const struct of_device_id *matches);
@@ -44,6 +42,7 @@ extern int of_irq_parse_one(struct device_node *device, int index,
 extern int of_irq_count(struct device_node *dev);
 extern int of_irq_get(struct device_node *dev, int index);
 extern int of_irq_get_byname(struct device_node *dev, const char *name);
+extern int of_irq_to_resource(struct device_node *dev, int index, struct resource *r);
 extern int of_irq_to_resource_table(struct device_node *dev,
 		struct resource *res, int nr_irqs);
 extern struct device_node *of_irq_find_parent(struct device_node *child);
@@ -76,6 +75,11 @@ static inline int of_irq_get_byname(struct device_node *dev, const char *name)
 {
 	return 0;
 }
+static inline int of_irq_to_resource(struct device_node *dev, int index,
+			      struct resource *r)
+{
+	return 0;
+}
 static inline int of_irq_to_resource_table(struct device_node *dev,
 					   struct resource *res, int nr_irqs)
 {
-- 
2.43.0.472.g3155946c3a-goog