rtl_nic: update firmware for RTL8153A

- rtl8153a-3 v2 02/07/20:
    1. Disable USB bp 2 and 3.

- rtl8153a-4 v2 02/07/20:
    1. Fix the wrong bp_num for RTL_FW_USB.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: Josh Boyer <jwboyer@kernel.org>