r8152: redefine REALTEK_USB_DEVICE macro

Redefine REALTEK_USB_DEVICE macro with USB_DEVICE_INTERFACE_CLASS and
USB_DEVICE_AND_INTERFACE_INFO to simply the code.

Although checkpatch.pl shows the following error, it is more readable.

	ERROR: Macros with complex values should be enclosed in parentheses

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>