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/plat/layerscape/board/ls1043/ls1043_psci.c b/plat/layerscape/board/ls1043/ls1043_psci.c
index 1c83df4..b402e7f 100644
--- a/plat/layerscape/board/ls1043/ls1043_psci.c
+++ b/plat/layerscape/board/ls1043/ls1043_psci.c
@@ -5,15 +5,15 @@
  */
 
 #include <arch_helpers.h>
-#include <debug.h>
-#include <errno.h>
 #include <assert.h>
+#include <debug.h>
+#include <delay_timer.h>
+#include <endian.h>
+#include <errno.h>
+#include <gicv2.h>
+#include <mmio.h>
 #include <platform.h>
 #include <psci.h>
-#include <mmio.h>
-#include <sys/endian.h>
-#include <gicv2.h>
-#include <delay_timer.h>
 #include "platform_def.h"
 
 #define LS_SCFG_BASE			0x01570000