ARM: dts: keystone: Update SoC specific compatible flags

Update the compatible flags to allow specific SoC identification.

Signed-off-by: Nishanth Menon <[e-mail]>
Signed-off-by: Santosh Shilimkar <[e-mail]>

arch/arm/boot/dts/k2e-evm.dts

···
 #include "k2e.dtsi"
 
 / {
-	compatible =  "ti,k2e-evm","ti,keystone";
+	compatible = "ti,k2e-evm", "ti,k2e", "ti,keystone";
 	model = "Texas Instruments Keystone 2 Edison EVM";
 
 	soc {

arch/arm/boot/dts/k2e.dtsi

···
  */
 
 / {
+	compatible = "ti,k2e", "ti,keystone";
+	model = "Texas Instruments Keystone 2 Edison SoC";
+
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;

arch/arm/boot/dts/k2hk-evm.dts

···
 #include "k2hk.dtsi"
 
 / {
-	compatible =  "ti,k2hk-evm","ti,keystone";
+	compatible =  "ti,k2hk-evm", "ti,k2hk", "ti,keystone";
 	model = "Texas Instruments Keystone 2 Kepler/Hawking EVM";
 
 	soc {

arch/arm/boot/dts/k2hk.dtsi

···
  */
 
 / {
+	compatible = "ti,k2hk", "ti,keystone";
+	model = "Texas Instruments Keystone 2 Kepler/Hawking SoC";
+
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;

arch/arm/boot/dts/k2l-evm.dts

···
 #include "k2l.dtsi"
 
 / {
-	compatible =  "ti,k2l-evm","ti,keystone";
+	compatible = "ti,k2l-evm", "ti,k2l", "ti,keystone";
 	model = "Texas Instruments Keystone 2 Lamarr EVM";
 
 	soc {

arch/arm/boot/dts/k2l.dtsi

···
  */
 
 / {
+	compatible = "ti,k2l", "ti,keystone";
+	model = "Texas Instruments Keystone 2 Lamarr SoC";
+
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;

arch/arm/boot/dts/keystone.dtsi

···
 #include "skeleton.dtsi"
 
 / {
+	compatible = "ti,keystone";
 	model = "Texas Instruments Keystone 2 SoC";
 	#address-cells = <2>;
 	#size-cells = <2>;