And, update support for 9880 chipsets.  The new firmware
fixes a regression with EAPOL 4/4 packets added in
a recent commit.

It also fixes a case where the firmware would improperly try
to use STBC when configured for 1x1 (as 9887 always is).

Signed-off-by: Ben Greear <greearb@candelatech.com>