cmd/tpm_test: Fix misleading code indentation

GCC 6.2 reasonably complains about the current code:

../cmd/tpm_test.c: In function ‘do_tpmtest’:
../cmd/tpm_test.c:540:3: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
   for (i = 0; i < argc; i++)
   ^~~
../cmd/tpm_test.c:542:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’
    printf("\n------\n");
    ^~~~~~

Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Updated to remove C99 variable decl:
Signed-off-by: Simon Glass <sjg@chromium.org>

cmd/tpm_test.c

@@ -532,15 +532,15 @@ static cmd_tbl_t cmd_cros_tpm_sub[] = {
 static int do_tpmtest(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	cmd_tbl_t *c;
+	int i;
 
 	printf("argc = %d, argv = ", argc);
-	do {
-		int i = 0;
 
-		for (i = 0; i < argc; i++)
-			printf(" %s", argv[i]);
-			printf("\n------\n");
-		} while (0);
+	for (i = 0; i < argc; i++)
+		printf(" %s", argv[i]);
+
+	printf("\n------\n");
+
 	argc--;
 	argv++;
 	c = find_cmd_tbl(argv[0], cmd_cros_tpm_sub,