caam-blob-example: fix build errors

- The <stropts.h> header is no longer available.
- The <sys/ioctl.h> is required.

Reported-by: Paolo Chiarlone <paolo.chiarlone@digi.com>
Signed-off-by: Hector Palacios <hector.palacios@digi.com>

https://jira.digi.com/browse/DEL-7207

caam-blob-example/caam_ops.c

@@ -16,6 +16,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <errno.h>
+#include <sys/ioctl.h>
 
 #include "caam_ops.h"
 

caam-blob-example/caam_ops.h

@@ -20,7 +20,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <stropts.h>
 #include <unistd.h>
 
 #include "caam_keyblob.h"