Define tsec flag values in config files

The tsec_info structure and array has a "flags" field for each
ethernet controller.  This field is the only reason there are
settings.  Switch to defining TSECn_FLAGS for each controller
in the config header, and we can greatly simplify the array, and
also simplify the addition of future boards.

Signed-off-by: Andy Fleming <afleming@freescale.com>
diff --git a/include/configs/MPC8313ERDB.h b/include/configs/MPC8313ERDB.h
index 81db96f..f92dce5 100644
--- a/include/configs/MPC8313ERDB.h
+++ b/include/configs/MPC8313ERDB.h
@@ -310,6 +310,8 @@
 #define CONFIG_TSEC2_NAME	"TSEC1"
 #define TSEC1_PHY_ADDR			0x1c
 #define TSEC2_PHY_ADDR			4
+#define TSEC1_FLAGS			TSEC_GIGABIT
+#define TSEC2_FLAGS			TSEC_GIGABIT
 #define TSEC1_PHYIDX			0
 #define TSEC2_PHYIDX			0