[PATCH -next] <linux/of.h>: add stub for of_get_next_parent() to fix qcom build error

[Randy Dunlap]

From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>

Fix a (COMPILE_TEST) build error when CONFIG_OF is not set/enabled
by adding a stub for of_get_next_parent().

../drivers/soc/qcom/qcom-geni-se.c:819:11: error: implicit declaration of function 'of_get_next_parent'; did you mean 'of_get_parent'? [-Werror=implicit-function-declaration]
../drivers/soc/qcom/qcom-geni-se.c:819:9: warning: assignment makes pointer from integer without a cast [-Wint-conversion]

Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Frank Rowand <frowand.list@xxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: Andy Gross <agross@xxxxxxxxxx>
Cc: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Cc: linux-arm-msm@xxxxxxxxxxxxxxx
---
 include/linux/of.h |    5 +++++
 1 file changed, 5 insertions(+)

--- linux-next-20200629.orig/include/linux/of.h
+++ linux-next-20200629/include/linux/of.h
@@ -630,6 +630,11 @@ static inline struct device_node *of_get
 	return NULL;
 }
 
+static inline struct device_node *of_get_next_parent(struct device_node *node)
+{
+	return NULL;
+}
+
 static inline struct device_node *of_get_next_child(
 	const struct device_node *node, struct device_node *prev)
 {