[NIU]: More BMAC alt MAC address fixes.

From: Matheos Worku <Matheos.Worku@Sun.COM>

1) niu_enable_alt_mac() needs to be adjusted so that the mask
   is computed properly for the BMAC case.

2) BMAC has 6 alt MAC addresses available, not 7.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/niu.c

@@ -1616,12 +1616,13 @@ static int niu_enable_alt_mac(struct niu *np, int index, int on)
 	if (index >= niu_num_alt_addr(np))
 		return -EINVAL;
 
-	if (np->flags & NIU_FLAGS_XMAC)
+	if (np->flags & NIU_FLAGS_XMAC) {
 		reg = XMAC_ADDR_CMPEN;
-	else
+		mask = 1 << index;
+	} else {
 		reg = BMAC_ADDR_CMPEN;
-
-	mask = 1 << index;
+		mask = 1 << (index + 1);
+	}
 
 	val = nr64_mac(reg);
 	if (on)

drivers/net/niu.h

@@ -499,7 +499,7 @@
 #define BMAC_ADDR2			0x00110UL
 #define  BMAC_ADDR2_ADDR2		0x000000000000ffffULL
 
-#define BMAC_NUM_ALT_ADDR		7
+#define BMAC_NUM_ALT_ADDR		6
 
 #define BMAC_ALT_ADDR0(NUM)		(0x00118UL + (NUM)*0x18UL)
 #define  BMAC_ALT_ADDR0_ADDR0		0x000000000000ffffULL