fix(dt-bindings): fix static checks

This patch fixes static checks errors reported for missing copyright in
`include/dt-bindings/interrupt-controller/arm-gic.h` and the include
order of header files in `.dts` and `.dtsi` files.

Change-Id: I2baaf2719fd2c84cbcc08a8f0c4440a17a9f24f6
Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Signed-off-by: Chris Kay <chris.kay@arm.com>
diff --git a/fdts/fvp-base-gicv3-psci-common.dtsi b/fdts/fvp-base-gicv3-psci-common.dtsi
index 0ef9273..b6753de 100644
--- a/fdts/fvp-base-gicv3-psci-common.dtsi
+++ b/fdts/fvp-base-gicv3-psci-common.dtsi
@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#include <services/sdei_flags.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <services/sdei_flags.h>
 
 #define LEVEL	0
 #define EDGE	2