generic: b53: clear SM_SW_FWD_MODE unconditionally when enabling VLAN

Setting this bit stops BCM53125 (bgmac actually) from receiving any
packets. This bit is cleared conditionally in b53_switch_reset and it
seems the same is done in bcmrobo.c which never sets that bit again.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 35723

target/linux/generic/files/drivers/net/phy/b53/b53_common.c

@@ -244,10 +244,9 @@ static void b53_enable_vlan(struct b53_device *dev, int enable)
 		b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5, &vc5);
 	}
 
-	if (enable) {
-		if (!is63xx(dev))
-			mgmt |= SM_SW_FWD_MODE;
+	mgmt &= ~SM_SW_FWD_MODE;
 
+	if (enable) {
 		vc0 |= VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID;
 		vc1 |= VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN;
 		vc4 &= ~VC4_ING_VID_CHECK_MASK;
@@ -267,7 +266,6 @@ static void b53_enable_vlan(struct b53_device *dev, int enable)
 				vc5 &= ~VC5_VID_FFF_EN;
 		}
 	} else {
-		mgmt &= ~SM_SW_FWD_MODE;
 		vc0 &= ~(VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID);
 		vc1 &= ~(VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN);
 		vc4 &= ~VC4_ING_VID_CHECK_MASK;