[PATCH] e1000: Fix bit 22 (TXDCTL) for 82571 & 82572 controllers

Removed duplicate code, TXDCTL and TXDCTL_COUNT_DESC are the same bit and there is no need to set it twice.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
diff --git a/drivers/net/e1000/e1000_hw.c b/drivers/net/e1000/e1000_hw.c
index 19a0b2a..f79d2a0 100644
--- a/drivers/net/e1000/e1000_hw.c
+++ b/drivers/net/e1000/e1000_hw.c
@@ -735,7 +735,6 @@
             break;
         case e1000_82571:
         case e1000_82572:
-            ctrl |= (1 << 22);
         case e1000_82573:
             ctrl |= E1000_TXDCTL_COUNT_DESC;
             break;