usb: misc: usb3503: Set platform data

Driver supports two paths of device instantiation: as platform and i2c
device. In the platform path it lacks of storing the driver specific
structure as drvdata.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c
index b45cb77..0cf2987 100644
--- a/drivers/usb/misc/usb3503.c
+++ b/drivers/usb/misc/usb3503.c
@@ -338,6 +338,7 @@
 	if (!hub)
 		return -ENOMEM;
 	hub->dev = &pdev->dev;
+	platform_set_drvdata(pdev, hub);
 
 	return usb3503_probe(hub);
 }