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/dw_ufs.h b/include/drivers/dw_ufs.h
index b05c7f5..a9774cf 100644
--- a/include/drivers/dw_ufs.h
+++ b/include/drivers/dw_ufs.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -7,7 +7,7 @@
 #ifndef __DW_UFS_H__
 #define __DW_UFS_H__
 
-#include <sys/types.h>
+#include <stdint.h>
 
 /* Bus Throtting */
 #define BUSTHRTL				0xC0