Fix order of remaining platform #includes

This fix modifies the order of system includes to meet the ARM TF coding
standard. There are some exceptions to this change in order to retain
header groupings and where there are headers within #if statements.

Change-Id: Ib5b668c992d817cc860e97b29e16ef106d17e404
Signed-off-by: Isla Mitchell <isla.mitchell@arm.com>
diff --git a/plat/xilinx/zynqmp/pm_service/pm_client.h b/plat/xilinx/zynqmp/pm_service/pm_client.h
index 03dec4c..16e37d5 100644
--- a/plat/xilinx/zynqmp/pm_service/pm_client.h
+++ b/plat/xilinx/zynqmp/pm_service/pm_client.h
@@ -12,8 +12,8 @@
 #ifndef _PM_CLIENT_H_
 #define _PM_CLIENT_H_
 
-#include "pm_defs.h"
 #include "pm_common.h"
+#include "pm_defs.h"
 
 /* Functions to be implemented by each PU */
 void pm_client_suspend(const struct pm_proc *proc, unsigned int state);