ARM: dts: am335x: Update elm phandle binding

The check for the "elm_id" binding had been removed.
This causes nand boot to fail on boards still using
the old binding. Update the bindings on those boards.
Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am335x-baltos.dtsi

@@ -226,7 +226,7 @@ nand@0,0 {
 
 		#address-cells = <1>;
 		#size-cells = <1>;
-		elm_id = <&elm>;
+		ti,elm-id = <&elm>;
 	};
 };
 

arch/arm/boot/dts/am335x-igep0033.dtsi

@@ -161,7 +161,7 @@ nand@0,0 {
 
 		#address-cells = <1>;
 		#size-cells = <1>;
-		elm_id = <&elm>;
+		ti,elm-id = <&elm>;
 
 		/* MTD partition table */
 		partition@0 {

arch/arm/boot/dts/am335x-phycore-som.dtsi

@@ -197,7 +197,7 @@ nandflash: nand@0,0 {
 		gpmc,wr-access-ns = <30>;
 		gpmc,wr-data-mux-bus-ns = <0>;
 
-		elm_id = <&elm>;
+		ti,elm-id = <&elm>;
 
 		#address-cells = <1>;
 		#size-cells = <1>;