ixgb: Use ARRAY_SIZE macro when appropriate.

Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/ixgb/ixgb_param.c b/drivers/net/ixgb/ixgb_param.c
index b27442a..c38ce73 100644
--- a/drivers/net/ixgb/ixgb_param.c
+++ b/drivers/net/ixgb/ixgb_param.c
@@ -245,8 +245,6 @@
 	return -1;
 }
 
-#define LIST_LEN(l) (sizeof(l) / sizeof(l[0]))
-
 /**
  * ixgb_check_options - Range Checking for Command Line Parameters
  * @adapter: board private structure
@@ -335,7 +333,7 @@
 			.name = "Flow Control",
 			.err  = "reading default settings from EEPROM",
 			.def  = ixgb_fc_tx_pause,
-			.arg  = { .l = { .nr = LIST_LEN(fc_list),
+			.arg  = { .l = { .nr = ARRAY_SIZE(fc_list),
 					 .p = fc_list }}
 		};