mpc85xx: use generic diag.sh

This commit removes the target-specific diag.sh script. This way, the
generic one is used for the target, which uses DT-aliases to specify the
LEDs used.

This way, we are also able to use different LEDs to indicate different
states. We use green status LEDs for indicating boot and a running
system. Where possible, the red status LED is used to indicate failsafe
mode and a running upgrade.

Signed-off-by: David Bauer <mail@david-bauer.net>

target/linux/mpc85xx/files/arch/powerpc/boot/dts/hiveap-330.dts

@@ -14,6 +14,13 @@
 	model = "Aerohive HiveAP-330";
 	compatible = "aerohive,hiveap-330";
 
+	aliases {
+		led-boot = &tricolor_green;
+		led-failsafe = &tricolor_red;
+		led-running = &tricolor_green;
+		led-upgrade = &tricolor_red;
+	};
+
 	chosen {
 		bootargs-override = "console=ttyS0,9600";
 	};
@@ -109,12 +116,12 @@
 				compatible = "national,lp5521";
 				reg = <0x32>;
 				clock-mode = /bits/ 8 <2>;
-				chan0 {
+				tricolor_red: chan0 {
 					chan-name = "hiveap-330:red:tricolor0";
 					led-cur = /bits/ 8 <0x2f>;
 					max-cur = /bits/ 8 <0x5f>;
 				};
-				chan1 {
+				tricolor_green:chan1 {
 					chan-name = "hiveap-330:green:tricolor0";
 					led-cur = /bits/ 8 <0x2f>;
 					max-cur = /bits/ 8 <0x5f>;

target/linux/mpc85xx/files/arch/powerpc/boot/dts/red-15w-rev1.dts

@@ -6,19 +6,26 @@
 	model = "Sophos RED 15w Rev.1";
 	compatible = "sophos,red-15w-rev1";
 
+	aliases {
+		led-boot = &system_green;
+		led-failsafe = &system_red;
+		led-running = &system_green;
+		led-upgrade = &system_red;
+	};
+
 	memory {
 		device_type = "memory";
 	};
 
 	leds {
 		compatible = "gpio-leds";
 
-		system_green {
+		system_green: system_green {
 			gpios = <&gpio0 7 0>;
 			label = "red-15w-rev1:green:system";
 		};
 
-		system_red {
+		system_red: system_red {
 			gpios = <&gpio0 3 0>;
 			label = "red-15w-rev1:red:system";
 		};

target/linux/mpc85xx/files/arch/powerpc/boot/dts/tl-wdr4900-v1.dts

@@ -24,6 +24,10 @@
 
 	aliases {
 		spi0 = &spi0;
+		led-boot = &system_green;
+		led-failsafe = &system_green;
+		led-running = &system_green;
+		led-upgrade = &system_green;
 	};
 
 	memory {
@@ -192,7 +196,7 @@
 	leds {
 		compatible = "gpio-leds";
 
-		system {
+		system_green: system {
 			gpios = <&gpio0 2 1>; /* active low */
 			label = "tp-link:blue:system";
 		};