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/MPC8349ITX.h b/include/configs/MPC8349ITX.h
index 44649d0..58ee13d 100644
--- a/include/configs/MPC8349ITX.h
+++ b/include/configs/MPC8349ITX.h
@@ -382,6 +382,7 @@
 #define CFG_TSEC1_OFFSET	0x24000
 #define TSEC1_PHY_ADDR		0x1c	/* VSC8201 uses address 0x1c */
 #define TSEC1_PHYIDX		0
+#define TSEC1_FLAGS		TSEC_GIGABIT
 #endif
 
 #ifdef CONFIG_TSEC2
@@ -391,6 +392,7 @@
 #define CONFIG_UNKNOWN_TSEC	/* TSEC2 is proprietary */
 #define TSEC2_PHY_ADDR		4
 #define TSEC2_PHYIDX		0
+#define TSEC2_FLAGS		TSEC_GIGABIT
 #endif
 
 #define CONFIG_ETHPRIME		"Freescale TSEC"