leds: Standardise LED naming scheme

As discussed on LKML some notion of 'function' is needed in
LED naming. This patch adds this to the documentation and
standardises existing LED drivers.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
diff --git a/arch/arm/mach-ixp4xx/dsmg600-setup.c b/arch/arm/mach-ixp4xx/dsmg600-setup.c
index 6886596..8cb0743 100644
--- a/arch/arm/mach-ixp4xx/dsmg600-setup.c
+++ b/arch/arm/mach-ixp4xx/dsmg600-setup.c
@@ -71,11 +71,11 @@
 
 static struct gpio_led dsmg600_led_pins[] = {
 	{
-		.name		= "power",
+		.name		= "dsmg600:green:power",
 		.gpio		= DSMG600_LED_PWR_GPIO,
 	},
 	{
-		.name		= "wlan",
+		.name		= "dsmg600:green:wlan",
 		.gpio		= DSMG600_LED_WLAN_GPIO,
 		.active_low	= true,
 	},
diff --git a/arch/arm/mach-ixp4xx/nas100d-setup.c b/arch/arm/mach-ixp4xx/nas100d-setup.c
index 4cecae8..159e1c4 100644
--- a/arch/arm/mach-ixp4xx/nas100d-setup.c
+++ b/arch/arm/mach-ixp4xx/nas100d-setup.c
@@ -60,17 +60,17 @@
 
 static struct gpio_led nas100d_led_pins[] = {
 	{
-		.name		= "wlan",   /* green led */
+		.name		= "nas100d:green:wlan",
 		.gpio		= NAS100D_LED_WLAN_GPIO,
 		.active_low	= true,
 	},
 	{
-		.name		= "power",  /* blue power led (off=flashing) */
+		.name		= "nas100d:blue:power",  /* (off=flashing) */
 		.gpio		= NAS100D_LED_PWR_GPIO,
 		.active_low	= true,
 	},
 	{
-		.name		= "disk",   /* yellow led */
+		.name		= "nas100d:yellow:disk",
 		.gpio		= NAS100D_LED_DISK_GPIO,
 		.active_low	= true,
 	},
diff --git a/arch/arm/mach-ixp4xx/nslu2-setup.c b/arch/arm/mach-ixp4xx/nslu2-setup.c
index acaebcb..d9a1828 100644
--- a/arch/arm/mach-ixp4xx/nslu2-setup.c
+++ b/arch/arm/mach-ixp4xx/nslu2-setup.c
@@ -63,20 +63,20 @@
 
 static struct gpio_led nslu2_led_pins[] = {
 	{
-		.name		= "ready",  /* green led */
+		.name		= "nslu2:green:ready",
 		.gpio		= NSLU2_LED_GRN_GPIO,
 	},
 	{
-		.name		= "status", /* red led */
+		.name		= "nslu2:red:status",
 		.gpio		= NSLU2_LED_RED_GPIO,
 	},
 	{
-		.name		= "disk-1",
+		.name		= "nslu2:green:disk-1",
 		.gpio		= NSLU2_LED_DISK1_GPIO,
 		.active_low	= true,
 	},
 	{
-		.name		= "disk-2",
+		.name		= "nslu2:green:disk-2",
 		.gpio		= NSLU2_LED_DISK2_GPIO,
 		.active_low	= true,
 	},