[U-Boot] [PATCH 3/8] Fix compile problem for some boards in the clock code.

[Reinhard Meyer <u-boot@emk-elektronik.de>]

Dear Alex Waterman,
> Some boards use AT91_SLOW_CLOCK and other use
> CONFIG_SYS_AT91_SLOW_CLOCK. This patch makes it so the arm926ejs
> clock code will return which ever is set.
> 
> Signed-off-by: Alex Waterman <awaterman@dawning.com>
> ---
>  arch/arm/cpu/arm926ejs/at91/clock.c |    4 ++++
>  1 files changed, 4 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/arm/cpu/arm926ejs/at91/clock.c b/arch/arm/cpu/arm926ejs/at91/clock.c
> index 608af2c..0083bd2 100644
> --- a/arch/arm/cpu/arm926ejs/at91/clock.c
> +++ b/arch/arm/cpu/arm926ejs/at91/clock.c
> @@ -57,7 +57,11 @@ static unsigned long at91_css_to_rate(unsigned long css)
>  {
>  	switch (css) {
>  	case AT91_PMC_MCKR_CSS_SLOW:
> +#ifdef AT91_SLOW_CLOCK
> +		return AT91_SLOW_CLOCK;
> +#else
>  		return CONFIG_SYS_AT91_SLOW_CLOCK;
> +#endif
>  	case AT91_PMC_MCKR_CSS_MAIN:
>  		return gd->main_clk_rate_hz;
>  	case AT91_PMC_MCKR_CSS_PLLA:

NAK. "Compile problems" for some boards shall not be fixed by hacks
into common source. Fix the board's definition file instead.

Best Regards,
Reinhard