[RESEND PATCH 1/3] imx6: clock: improve calculations to get the PLL video rate

[sbabic at denx.de]

> During some tests to check the pixel clock rate in the transition from
> U-Boot to the Linux kernel, I noticed that with the same configuration
> of the registers the debug messages reported different rates.
> The same Linux kernel calculations are now used to get the PLL video
> rate.
> Signed-off-by: Dario Binacchi <dario.binacchi at amarulasolutions.com>
> Reviewed-by: Michael Trimarchi <michael at amarulasolutions.com>
Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

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