usb/ch9: use proper endianess for wBytesPerInterval

while going through Tatyana's changes for the gadget framework I noticed
that this type is not defined as __le16.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index 83126b0..c962608 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -129,7 +129,7 @@
 		max_tx = ep->desc.wMaxPacketSize * (desc->bMaxBurst + 1);
 	else
 		max_tx = 999999;
-	if (desc->wBytesPerInterval > max_tx) {
+	if (le16_to_cpu(desc->wBytesPerInterval) > max_tx) {
 		dev_warn(ddev, "%s endpoint with wBytesPerInterval of %d in "
 				"config %d interface %d altsetting %d ep %d: "
 				"setting to %d\n",