TWL4030: make LEDs selectable for twl4030_led_init()

Not all boards have both LEDs hooked, so enabling both on
boards with single LED will just waste power. Make it
possible to choose LEDs by adding argument to
twl4030_led_init().

Using this turn on only LEDB for pandora, leave both LEDs
on for all other boards, as it was before this patch.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
diff --git a/board/logicpd/zoom2/zoom2.c b/board/logicpd/zoom2/zoom2.c
index 21afc29..387ed2d 100644
--- a/board/logicpd/zoom2/zoom2.c
+++ b/board/logicpd/zoom2/zoom2.c
@@ -149,7 +149,7 @@
 {
 	zoom2_identify();
 	twl4030_power_init();
-	twl4030_led_init();
+	twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
 	dieid_num_r();
 
 	/*