[U-Boot] [PATCH] cmd_sf: rename "speed" to "hz"

[Haavard Skinnemoen]

Mike Frysinger wrote:
> The term "hz" is used everywhere else when talking about the frequency of
> the SPI bus, so have the sf command use it as well to stay consistent.  It
> even presents itself as "hz" when showing user help.
> 
> Signed-off-by: Mike Frysinger <vapier at gentoo.org>

I like it. "hz" makes it perfectly clear what the value means.

Acked-by: Haavard Skinnemoen <haavard.skinnemoen at atmel.com>