libc: Fix all includes in codebase

The codebase was using non-standard headers. It is needed to replace
them by the correct ones so that we can use the new libc headers.

Change-Id: I530f71d9510cb036e69fe79823c8230afe890b9d
Acked-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/include/drivers/cadence/cdns_uart.h b/include/drivers/cadence/cdns_uart.h
index 7ab6df0..51de8e3 100644
--- a/include/drivers/cadence/cdns_uart.h
+++ b/include/drivers/cadence/cdns_uart.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -29,7 +29,7 @@
 
 #ifndef __ASSEMBLY__
 
-#include <types.h>
+#include <stdint.h>
 
 typedef struct {
 	console_t console;