b43: N-PHY: avoid PHY hangs for rev 3 and 4

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43/phy_n.c

@@ -3667,6 +3667,7 @@ static void b43_nphy_op_prepare_structs(struct b43_wldev *dev)
 
 	memset(nphy, 0, sizeof(*nphy));
 
+	nphy->hang_avoid = (phy->rev == 3 || phy->rev == 4);
 	nphy->gain_boost = true; /* this way we follow wl, assume it is true */
 	nphy->txrx_chain = 2; /* sth different than 0 and 1 for now */
 	nphy->phyrxchain = 3; /* to avoid b43_nphy_set_rx_core_state like wl */