Quick & Dirty fix for log buffer problem when environment is not set

Trigger watchdog when reading the env - this might take a while.

Set debugging baud rate for KUP4K board
diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c
index 08e888c..0a19ce4 100644
--- a/common/cmd_nvedit.c
+++ b/common/cmd_nvedit.c
@@ -42,6 +42,7 @@
 #include <common.h>
 #include <command.h>
 #include <environment.h>
+#include <watchdog.h>
 #include <cmd_nvedit.h>
 #include <linux/stddef.h>
 #include <asm/byteorder.h>
@@ -459,6 +460,8 @@
 {
 	int i, nxt;
 
+	WATCHDOG_RESET();
+
 	for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
 		int val;