bcm968580xref: enable led support

Enable the led support in the configuration
of the board bcm968580xref.
Signed-off-by: NPhilippe Reynes <philippe.reynes@softathome.com>

configs/bcm968580xref_ram_defconfig

@@ -28,6 +28,9 @@ CONFIG_BLK=y
 CONFIG_CLK=y
 CONFIG_DM_GPIO=y
 CONFIG_BCM6345_GPIO=y
+CONFIG_LED=y
+CONFIG_LED_BCM6858=y
+CONFIG_LED_BLINK=y
 # CONFIG_MMC is not set
 CONFIG_MTD=y
 CONFIG_NAND=y