powerpc/5200: Add Lite5200 on-board LEDs as devices

The Lite5200 evaluation board has a number of debug LEDs that Linux
doesn't know about yet. This change adds a gpio-leds stanza to the
lite5200 device tree so that the correct driver can get hooked up.

Also, make use of the dtc labels feature to reduce the number of source
lines required to add the gpio-controller property to the general
purpose timer nodes. In addition, the required #gpio-cells properties
are added to the common mpc5200b dtsi include file so that each board
doesn't need to add them explicitly. This still doesn't enable gpio
mode, 'gpio-controller' is required for that, but it means less work
needs to be done by board ports.

Cc: Anatolij Gustschin <[e-mail]>
Signed-off-by: Grant Likely <[e-mail]>

arch/powerpc/boot/dts/lite5200b.dts

···
 
 /include/ "mpc5200b.dtsi"
 
+&gpt0 { fsl,has-wdt; };
+&gpt2 { gpio-controller; };
+&gpt3 { gpio-controller; };
+
 / {
 	model = "fsl,lite5200b";
 	compatible = "fsl,lite5200b";
+
+	leds {
+		compatible = "gpio-leds";
+		tmr2 {
+			gpios = <&gpt2 0 1>;
+		};
+		tmr3 {
+			gpios = <&gpt3 0 1>;
+			linux,default-trigger = "heartbeat";
+		};
+		led1 { gpios = <&gpio_wkup 2 1>; };
+		led2 { gpios = <&gpio_simple 3 1>; };
+		led3 { gpios = <&gpio_wkup 3 1>; };
+		led4 { gpios = <&gpio_simple 2 1>; };
+	};
 
 	memory {
 		reg = <0x00000000 0x10000000>;	// 256MB
 	};
 
 	soc5200@f0000000 {
-		timer@600 {	// General Purpose Timer
-			fsl,has-wdt;
-		};
-
 		psc@2000 {		// PSC1
 			compatible = "fsl,mpc5200b-psc-uart","fsl,mpc5200-psc-uart";
 			cell-index = <0>;

arch/powerpc/boot/dts/mpc5200b.dtsi

···
 			reg = <0x500 0x80>;
 		};
 
-		timer@600 {	// General Purpose Timer
+		gpt0: timer@600 {	// General Purpose Timer
 			compatible = "fsl,mpc5200b-gpt","fsl,mpc5200-gpt";
+			#gpio-cells = <2>;  // Add 'gpio-controller;' to enable gpio mode
 			reg = <0x600 0x10>;
 			interrupts = <1 9 0>;
+			// add 'fsl,has-wdt' to enable watchdog
 		};
 
-		timer@610 {	// General Purpose Timer
+		gpt1: timer@610 {	// General Purpose Timer
 			compatible = "fsl,mpc5200b-gpt","fsl,mpc5200-gpt";
+			#gpio-cells = <2>;  // Add 'gpio-controller;' to enable gpio mode
 			reg = <0x610 0x10>;
 			interrupts = <1 10 0>;
 		};
 
-		timer@620 {	// General Purpose Timer
+		gpt2: timer@620 {	// General Purpose Timer
 			compatible = "fsl,mpc5200b-gpt","fsl,mpc5200-gpt";
+			#gpio-cells = <2>;  // Add 'gpio-controller;' to enable gpio mode
 			reg = <0x620 0x10>;
 			interrupts = <1 11 0>;
 		};
 
-		timer@630 {	// General Purpose Timer
+		gpt3: timer@630 {	// General Purpose Timer
 			compatible = "fsl,mpc5200b-gpt","fsl,mpc5200-gpt";
+			#gpio-cells = <2>;  // Add 'gpio-controller;' to enable gpio mode
 			reg = <0x630 0x10>;
 			interrupts = <1 12 0>;
 		};
 
-		timer@640 {	// General Purpose Timer
+		gpt4: timer@640 {	// General Purpose Timer
 			compatible = "fsl,mpc5200b-gpt","fsl,mpc5200-gpt";
+			#gpio-cells = <2>;  // Add 'gpio-controller;' to enable gpio mode
 			reg = <0x640 0x10>;
 			interrupts = <1 13 0>;
 		};
 
-		timer@650 {	// General Purpose Timer
+		gpt5: timer@650 {	// General Purpose Timer
 			compatible = "fsl,mpc5200b-gpt","fsl,mpc5200-gpt";
+			#gpio-cells = <2>;  // Add 'gpio-controller;' to enable gpio mode
 			reg = <0x650 0x10>;
 			interrupts = <1 14 0>;
 		};
 
-		timer@660 {	// General Purpose Timer
+		gpt6: timer@660 {	// General Purpose Timer
 			compatible = "fsl,mpc5200b-gpt","fsl,mpc5200-gpt";
+			#gpio-cells = <2>;  // Add 'gpio-controller;' to enable gpio mode
 			reg = <0x660 0x10>;
 			interrupts = <1 15 0>;
 		};
 
-		timer@670 {	// General Purpose Timer
+		gpt7: timer@670 {	// General Purpose Timer
 			compatible = "fsl,mpc5200b-gpt","fsl,mpc5200-gpt";
+			#gpio-cells = <2>;  // Add 'gpio-controller;' to enable gpio mode
 			reg = <0x670 0x10>;
 			interrupts = <1 16 0>;
 		};