sdhci: fix led naming

Fix the led device naming for the sdhci driver.

The led class documentation defines the led name to have the
form "devicename:colour:function" while not applicable sections
should be left blank.

To comply with the documentation the led device name is changed
from "mmc*" to "mmc*::".

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

drivers/mmc/host/sdhci.c

@@ -1722,7 +1722,9 @@ int sdhci_add_host(struct sdhci_host *host)
 #endif
 
 #ifdef SDHCI_USE_LEDS_CLASS
-	host->led.name = mmc_hostname(mmc);
+	snprintf(host->led_name, sizeof(host->led_name),
+		"%s::", mmc_hostname(mmc));
+	host->led.name = host->led_name;
 	host->led.brightness = LED_OFF;
 	host->led.default_trigger = mmc_hostname(mmc);
 	host->led.brightness_set = sdhci_led_control;

drivers/mmc/host/sdhci.h

@@ -220,6 +220,7 @@ struct sdhci_host {
 
 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
 	struct led_classdev	led;		/* LED control */
+	char   led_name[32];
 #endif
 
 	spinlock_t		lock;		/* Mutex */