r8152: support new chips

Support RTL8153C, RTL8153D, RTL8156A, and RTL8156B. The RTL8156A
and RTL8156B are the 2.5G ethernet.

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