[TG3]: more use of TG3_FLG2_5705_PLUS flag

Rewrite of a couple of troublesome multi-way if statements to use
TG3_FLG2_5705_PLUS flag.
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/tg3.c

@@ -5237,10 +5237,8 @@ static int tg3_reset_hw(struct tg3 *tp)
 		      RDMAC_MODE_LNGREAD_ENAB);
 	if (tp->tg3_flags & TG3_FLAG_SPLIT_MODE)
 		rdmac_mode |= RDMAC_MODE_SPLIT_ENABLE;
-	if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705 &&
-	     tp->pci_chip_rev_id != CHIPREV_ID_5705_A0) ||
-	    (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5750 ||
-	     GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5752)) {
+	if ((tp->tg3_flags2 & TG3_FLG2_5705_PLUS) &&
+	     tp->pci_chip_rev_id != CHIPREV_ID_5705_A0) {
 		if (tp->tg3_flags2 & TG3_FLG2_TSO_CAPABLE &&
 		    (tp->pci_chip_rev_id == CHIPREV_ID_5705_A1 ||
 		     tp->pci_chip_rev_id == CHIPREV_ID_5705_A2)) {
@@ -5353,10 +5351,8 @@ static int tg3_reset_hw(struct tg3 *tp)
 	       WDMAC_MODE_FIFOURUN_ENAB | WDMAC_MODE_FIFOOREAD_ENAB |
 	       WDMAC_MODE_LNGREAD_ENAB);
 
-	if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705 &&
-	     tp->pci_chip_rev_id != CHIPREV_ID_5705_A0) ||
-	    (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5750 ||
-	     GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5752)) {
+	if ((tp->tg3_flags2 & TG3_FLG2_5705_PLUS) &&
+	     tp->pci_chip_rev_id != CHIPREV_ID_5705_A0) {
 		if ((tp->tg3_flags & TG3_FLG2_TSO_CAPABLE) &&
 		    (tp->pci_chip_rev_id == CHIPREV_ID_5705_A1 ||
 		     tp->pci_chip_rev_id == CHIPREV_ID_5705_A2)) {