[PATCH] USB: core: add missing header dependencies

[Baoyou Xie]

We get 1 warning when building kernel with W=1:
drivers/usb/core/of.c:31:21: warning: no previous prototype for 'usb_of_get_child_node' [-Wmissing-prototypes]

In fact, this function is declared in linux/usb/of.h, so this patch
add missing header dependencies

Signed-off-by: Baoyou Xie <baoyou.xie@xxxxxxxxxx>
---
 drivers/usb/core/of.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/core/of.c b/drivers/usb/core/of.c
index 2289700..3de4f88 100644
--- a/drivers/usb/core/of.c
+++ b/drivers/usb/core/of.c
@@ -18,6 +18,7 @@
  */
 
 #include <linux/of.h>
+#include <linux/usb/of.h>
 
 /**
  * usb_of_get_child_node - Find the device node match port number
-- 
2.7.4