TSI148: Fix argument parsing

This patch does 2 things:
 - Fix the argument number assigned to the vdw (VME data width) value.
   Previously, a nonexistent 7th arument was read as the vdw variable.

 - Reduce the size of the argument array for the tsi148 command from
   8 to 7.  The tsi148 command itself is argument index 0, and the
   maximum number arguments passed to the command is 6, making a total
   of 7 for the array.

Signed-off-by: Brent Darley <bdarley@xes-inc.com>
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>

common/cmd_tsi148.c

@@ -419,7 +419,7 @@ int do_tsi148(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	if (argc > 5)
 		vam = simple_strtoul(argv[5], NULL, 16);
 	if (argc > 6)
-		vdw = simple_strtoul(argv[7], NULL, 16);
+		vdw = simple_strtoul(argv[6], NULL, 16);
 
 	switch (cmd) {
 	case 'c':
@@ -465,7 +465,7 @@ int do_tsi148(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 }
 
 U_BOOT_CMD(
-	tsi148,	8,	1,	do_tsi148,
+	tsi148,	7,	1,	do_tsi148,
 	"initialize and configure Turndra Tsi148\n",
 	"init\n"
 	"    - initialize tsi148\n"