GIC-600: Fix include ordering according to the coding style

Change-Id: Ia120bcaacea3a462ab78db13f84ed23493033601
Signed-off-by: Max Shvetsov <maksims.svecovs@arm.com>
diff --git a/plat/arm/board/n1sdp/n1sdp_bl31_setup.c b/plat/arm/board/n1sdp/n1sdp_bl31_setup.c
index 4f158ee..b150b89 100644
--- a/plat/arm/board/n1sdp/n1sdp_bl31_setup.c
+++ b/plat/arm/board/n1sdp/n1sdp_bl31_setup.c
@@ -6,11 +6,11 @@
 
 #include <platform_def.h>
 
+#include <common/debug.h>
 #include <drivers/arm/css/css_mhu_doorbell.h>
 #include <drivers/arm/css/scmi.h>
 #include <drivers/arm/css/sds.h>
 #include <drivers/arm/gic600_multichip.h>
-#include <common/debug.h>
 #include <lib/mmio.h>
 #include <lib/utils.h>
 #include <plat/arm/common/plat_arm.h>