dra7xx_evm: Re-order and comment the networking related config options

Signed-off-by: Tom Rini <trini@ti.com>

include/configs/dra7xx_evm.h

@@ -26,21 +26,19 @@
 #include <configs/omap5_common.h>
 
 /* CPSW Ethernet */
-#define CONFIG_CMD_NET
+#define CONFIG_CMD_NET			/* 'bootp' and 'tftp' */
 #define CONFIG_CMD_DHCP
-#define CONFIG_CMD_PING
-#define CONFIG_CMD_MII
-#define CONFIG_DRIVER_TI_CPSW
-#define CONFIG_MII
-#define CONFIG_BOOTP_DEFAULT
-#define CONFIG_BOOTP_DNS
+#define CONFIG_BOOTP_DNS		/* Configurable parts of CMD_DHCP */
 #define CONFIG_BOOTP_DNS2
 #define CONFIG_BOOTP_SEND_HOSTNAME
 #define CONFIG_BOOTP_GATEWAY
 #define CONFIG_BOOTP_SUBNETMASK
-#define CONFIG_NET_RETRY_COUNT         10
-#define CONFIG_NET_MULTI
-#define CONFIG_PHY_GIGE
+#define CONFIG_NET_RETRY_COUNT		10
+#define CONFIG_CMD_PING
+#define CONFIG_CMD_MII
+#define CONFIG_DRIVER_TI_CPSW		/* Driver for IP block */
+#define CONFIG_MII			/* Required in net/eth.c */
+#define CONFIG_PHY_GIGE			/* per-board part of CPSW */
 #define CONFIG_PHYLIB
 #define CONFIG_PHY_ADDR			2