ARM: at91/dt: add GPBR nodes

Add GPBR (General Purpose Block Backup Registers) nodes.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/boot/dts/at91sam9260.dtsi

@@ -974,6 +974,12 @@ watchdog@fffffd40 {
 				atmel,idle-halt;
 				status = "disabled";
 			};
+
+			gpbr: syscon@fffffd50 {
+				compatible = "atmel,at91sam9260-gpbr", "syscon";
+				reg = <0xfffffd50 0x10>;
+				status = "disabled";
+			};
 		};
 
 		nand0: nand@40000000 {

arch/arm/boot/dts/at91sam9261.dtsi

@@ -842,6 +842,12 @@ watchdog@fffffd40 {
 				interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
 				status = "disabled";
 			};
+
+			gpbr: syscon@fffffd50 {
+				compatible = "atmel,at91sam9260-gpbr", "syscon";
+				reg = <0xfffffd50 0x10>;
+				status = "disabled";
+			};
 		};
 	};
 

arch/arm/boot/dts/at91sam9263.dtsi

@@ -939,6 +939,12 @@ rtc@fffffd50 {
 				clocks = <&slow_xtal>;
 				status = "disabled";
 			};
+
+			gpbr: syscon@fffffd60 {
+				compatible = "atmel,at91sam9260-gpbr", "syscon";
+				reg = <0xfffffd60 0x50>;
+				status = "disabled";
+			};
 		};
 
 		fb0: fb@0x00700000 {

arch/arm/boot/dts/at91sam9g45.dtsi

@@ -1206,6 +1206,12 @@ rtc@fffffdb0 {
 				interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
 				status = "disabled";
 			};
+
+			gpbr: syscon@fffffd60 {
+				compatible = "atmel,at91sam9260-gpbr", "syscon";
+				reg = <0xfffffd60 0x10>;
+				status = "disabled";
+			};
 		};
 
 		fb0: fb@0x00500000 {

arch/arm/boot/dts/at91sam9rl.dtsi

@@ -1074,6 +1074,12 @@ rtc@fffffd20 {
 				clocks = <&clk32k>;
 				status = "disabled";
 			};
+
+			gpbr: syscon@fffffd60 {
+				compatible = "atmel,at91sam9260-gpbr", "syscon";
+				reg = <0xfffffd60 0x10>;
+				status = "disabled";
+			};
 		};
 	};