net: usb: rtl8150: constify usb_device_id

usb_device_id are not supposed to change at runtime. All functions
working with usb_device_id provided by <linux/usb.h> work with
const usb_device_id. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/usb/rtl8150.c

@@ -112,7 +112,7 @@
 #undef	EEPROM_WRITE
 
 /* table of devices that work with this driver */
-static struct usb_device_id rtl8150_table[] = {
+static const struct usb_device_id rtl8150_table[] = {
 	{USB_DEVICE(VENDOR_ID_REALTEK, PRODUCT_ID_RTL8150)},
 	{USB_DEVICE(VENDOR_ID_MELCO, PRODUCT_ID_LUAKTX)},
 	{USB_DEVICE(VENDOR_ID_MICRONET, PRODUCT_ID_SP128AR)},