cmd_led: Extend led command to support blinking and more leds

This patch extends the U-Boot "led" command to support automatic blinking
by setting a blink frequency in milliseconds. Additionally the number of
supported LEDs is increased to 6 (0...5).

This will be used by the PCA9551 LED driver.

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/misc/status_led.c b/drivers/misc/status_led.c
index ed9adb2..9869d98 100644
--- a/drivers/misc/status_led.c
+++ b/drivers/misc/status_led.c
@@ -53,6 +53,20 @@
 	0,
     },
 #endif
+#if defined(STATUS_LED_BIT4)
+    {	STATUS_LED_BIT4,
+	STATUS_LED_STATE4,
+	STATUS_LED_PERIOD4,
+	0,
+    },
+#endif
+#if defined(STATUS_LED_BIT5)
+    {	STATUS_LED_BIT5,
+	STATUS_LED_STATE5,
+	STATUS_LED_PERIOD5,
+	0,
+    },
+#endif
 };
 
 #define MAX_LED_DEV	(sizeof(led_dev)/sizeof(led_dev_t))