[U-Boot] [PATCH V3 for NET] tsec: do not print Speed: if using netconsole

[Ed Swarthout]

CONFIG_NETCONSOLE on the p2020ds is functional with the tsec driver.  
But the printf in adjust_link() which is called by startup_tsec()
called by tsec_init() in tsec.c is making it impossible to use.

For example typing 12345 on the netconsole causes the message to be
printed for every character:

=> Speed: 1000, full duplex
1Speed: 1000, full duplex
2Speed: 1000, full duplex
3Speed: 1000, full duplex
4Speed: 1000, full duplex
5Speed: 1000, full duplex

Signed-off-by: Ed Swarthout <Ed.Swarthout at freescale.com>
---
 drivers/net/tsec.c |   10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/net/tsec.c b/drivers/net/tsec.c
index fd49eff..392072f 100644
--- a/drivers/net/tsec.c
+++ b/drivers/net/tsec.c
@@ -941,10 +941,12 @@ static void adjust_link(struct eth_device *dev)
 			break;
 		}
 
-		printf("Speed: %d, %s duplex%s\n", priv->speed,
-		       (priv->duplexity) ? "full" : "half",
-		       (priv->flags & TSEC_FIBER) ? ", fiber mode" : "");
-
+		if (strcmp(getenv("stdin"), "nc") != 0) {
+			printf("Speed: %d, %s duplex%s\n", priv->speed,
+				(priv->duplexity) ? "full" : "half",
+				(priv->flags & TSEC_FIBER) ?
+					", fiber mode" : "");
+		}
 	} else {
 		printf("%s: No link.\n", dev->name);
 	}
-- 
1.6.5