Rename include directory to mbedtls
diff --git a/programs/pkey/key_app_writer.c b/programs/pkey/key_app_writer.c
index 3be1ce0..1be0dd3 100644
--- a/programs/pkey/key_app_writer.c
+++ b/programs/pkey/key_app_writer.c
@@ -21,22 +21,22 @@
  */
 
 #if !defined(POLARSSL_CONFIG_FILE)
-#include "polarssl/config.h"
+#include "mbedtls/config.h"
 #else
 #include POLARSSL_CONFIG_FILE
 #endif
 
 #if defined(POLARSSL_PLATFORM_C)
-#include "polarssl/platform.h"
+#include "mbedtls/platform.h"
 #else
 #include <stdio.h>
 #define polarssl_printf     printf
 #endif
 
 #if defined(POLARSSL_PK_WRITE_C) && defined(POLARSSL_FS_IO)
-#include "polarssl/error.h"
-#include "polarssl/pk.h"
-#include "polarssl/error.h"
+#include "mbedtls/error.h"
+#include "mbedtls/pk.h"
+#include "mbedtls/error.h"
 
 #include <stdio.h>
 #include <string.h>