[U-Boot] cmd: pmic: update help description

[Tom Rini]

On Wed, Jan 03, 2018 at 09:10:34AM +0100, Klaus Goger wrote:

> Change help description to match the style of the other U-Boot commands
> and get rid of the leading whitespace.
> 
> Signed-off-by: Klaus Goger <klaus.goger at theobroma-systems.com>
> Reviewed-by: Lukasz Majewski <lukma at denx.de>

Applied to u-boot/master, thanks!

-- 
Tom
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