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/sbc8641d.h b/include/configs/sbc8641d.h
index 277b611..760b754 100644
--- a/include/configs/sbc8641d.h
+++ b/include/configs/sbc8641d.h
@@ -380,6 +380,10 @@
 #define TSEC2_PHYIDX		0
 #define TSEC3_PHYIDX		0
 #define TSEC4_PHYIDX		0
+#define TSEC1_FLAGS		TSEC_GIGABIT
+#define TSEC2_FLAGS		TSEC_GIGABIT
+#define TSEC3_FLAGS		TSEC_GIGABIT
+#define TSEC4_FLAGS		TSEC_GIGABIT
 
 #define CFG_TBIPA_VALUE	0x1e	/* Set TBI address not to conflict with TSEC1_PHY_ADDR */