ARM: sunxi: support more then just 2 leds on the sunxi platform

The cubietruck introduces more then 2 leds for u-boot to control.
This patch adds support for that.

Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>
ARM: sunxi: Add all of the cubietruck's leds

The cubietruck has 4 LEDS (plus a red 5th for the power) connected to
GPIO's.

This patch adds support for all 4 leds.

STATUSLED0 PH21 (gpio 245) Blue
STATUSLED1 PH20 (gpio 244) Orange
STATUSLED2 PH11 (gpio 235) White
STATUSLED3 PH07 (gpio 231) Green

Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>