[U-Boot] km/common: remove unused function declarations

[Tom Rini]

On Mon, Jul 10, 2017 at 09:46:23AM +0200, Holger Brunck wrote:

> Cc: Wolfgang Denk <wd at denx.de>
> Cc: Heiko Schocher <hs at denx.de>
> Signed-off-by: Holger Brunck <holger.brunck at keymile.com>

Applied to u-boot/master, thanks!

-- 
Tom
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