treewide: dts: use C style includes

No functional change but allows me to use one script to compile all
device tree source files.

Signed-off-by: Mathias Kresin <dev@kresin.me>

target/linux/mcs814x/files-3.18/arch/arm/boot/dts/dlan-usb-extender.dts

@@ -7,7 +7,7 @@
  */
 
 /dts-v1/;
-/include/ "mcs8140.dtsi"
+#include "mcs8140.dtsi"
 
 / {
 	model = "Devolo dLAN USB Extender";

target/linux/mcs814x/files-3.18/arch/arm/boot/dts/mcs8140.dtsi

@@ -6,7 +6,7 @@
  * Licensed under GPLv2.
  */
 
-/include/ "skeleton.dtsi"
+#include "skeleton.dtsi"
 
 / {
 	model = "Moschip MCS8140 family SoC";

target/linux/mcs814x/files-3.18/arch/arm/boot/dts/rbt-832.dts

@@ -7,7 +7,7 @@
  */
 
 /dts-v1/;
-/include/ "mcs8140.dtsi"
+#include "mcs8140.dtsi"
 
 / {
 	model = "Tigal RBT-832";

target/linux/oxnas/files/arch/arm/boot/dts/ox820.dtsi

@@ -6,7 +6,7 @@
  * published by the Free Software Foundation.
  */
 
-/include/ "skeleton.dtsi"
+#include "skeleton.dtsi"
 
 / {
 	compatible = "plxtech,nas7820", "plxtech,nas782x";

target/linux/ramips/dts/DCH-M225.dts

 /dts-v1/;
 
-/include/ "mt7620a.dtsi"
+#include "mt7620a.dtsi"
 
 / {
 	compatible = "dlink,dch-m225", "ralink,mt7620a-soc";

target/linux/ramips/dts/DUZUN-DM06.dts

 /dts-v1/;
 
-/include/ "mt7628an.dtsi"
+#include "mt7628an.dtsi"
 
 / {
 	compatible = "duzun,dm06-mt7628an", "mediatek,mt7628an-soc";

target/linux/ramips/dts/MAC1200RV2.dts

 /dts-v1/;
 
-/include/ "mt7628an.dtsi"
+#include "mt7628an.dtsi"
 
 / {
 	compatible = "mercury,mac1200rv2", "mediatek,mt7628an-soc";