Fix for only one led getting set or reset when the led_name is 'all'

Previous discussion:
http://lists.denx.de/pipermail/u-boot/2011-May/093068.html



Changes since v1:
Fixed checkpatch if statement error noticed by Sergei.

Signed-off-by: Joel A Fernandes <agnel.joel@gmail.com>
Signed-off-by: Jason Kridner <jkridner@beagleboard.org>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>