freeze: add freeze_thaw test

Change-Id: I31db80b89adca9ac354a96ad21073b269d8a0e24

test/freeze_thaw/cmd/helloworld.c

@@ -0,0 +1,15 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(int argc, char **argv)
+{
+	int num;
+
+	if (argc < 2) {
+		printf("usage: %s <num>\n", argv[0]);
+		return 1;
+	}
+	num = atoi(argv[1]);
+	printf("hello world[%d]\n", num);
+	return 0;
+}