via-velocity: enable perfect filtering for multicast packets

Signed-off-by: Joey Zhuo <[e-mail]>
Acked-by: Francois Romieu <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/via-velocity.c

···
 		}
 
 		mac_set_cam_mask(regs, vptr->mCAMmask);
-		rx_mode = (RCR_AM | RCR_AB);
+		rx_mode = RCR_AM | RCR_AB | RCR_AP;
 	}
 	if (dev->mtu > 1500)
 		rx_mode |= RCR_AL;