Correct vxWorks elf boot to load at correct address

argv[0] contains bootvx (command name) not the load address, if called with
argv < 2 use load_addr, else use address argument given to the command.

Signed-off-by: Stany MARCEL <smarcel@novasys-ingenierie.com>
diff --git a/common/cmd_elf.c b/common/cmd_elf.c
index f741f6b..ab9c7e3 100644
--- a/common/cmd_elf.c
+++ b/common/cmd_elf.c
@@ -156,16 +156,16 @@
 	 * If we don't know where the image is then we're done.
 	 */
 
-	if (argc < 1)
+	if (argc < 2)
 		addr = load_addr;
 	else
-		addr = simple_strtoul(argv[0], NULL, 16);
+		addr = simple_strtoul(argv[1], NULL, 16);
 
 #if defined(CONFIG_CMD_NET)
 	/*
 	 * Check to see if we need to tftp the image ourselves before starting
 	 */
-	if ((argc == 1) && (strcmp(argv[0], "tftp") == 0)) {
+	if ((argc == 2) && (strcmp(argv[1], "tftp") == 0)) {
 		if (NetLoop(TFTPGET) <= 0)
 			return 1;
 		printf("Automatic boot of VxWorks image at address 0x%08lx ...\n",