[U-Boot] cmd_led.c: Standardize format of help and usage info.

[Tom Rini]

On Sun, Nov 11, 2012 at 10:39:07AM -0000, Robert P. J. Day wrote:

> Current "led" help and usage info has redundancy and extraneous
> newlines, tweak it to be consistent with other commands.
> 
> Signed-off-by: Robert P. J. Day <rpjday at crashcourse.ca>

Applied to u-boot/master, thanks!

-- 
Tom
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