[U-Boot] drivers/mmc/dw_mmc - remove extra arch specific "asm/arch/clk.h" inclusion

[Andy Fleming]

On Mon, Jul 15, 2013 at 03:30:30PM +0400, Alexey Brodkin wrote:
> 1. No contents of "asm/arch/clk.h" is used within "dw_mmc.c".
> 2. If arch doesn't have "asm/arch/clk.h" driver won't build.
> 
> Without mentioned inclusion dw_mmc driver could be built for arches
> other than ARM. For ARM driver still builds without it.
> 
> Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com>
> 
> Cc: Mischa Jonker <mjonker at synopsys.com>
> Cc: Andy Fleming <afleming at gmail.com>
> Cc: Rajeshwari Shinde <rajeshwari.s at samsung.com>
> Cc: Amar <amarendra.xt at samsung.com>
> Cc: Minkyu Kang <mk7.kang at samsung.com>
> Cc: Jaehoon Chung <jh80.chung at samsung.com>

Applied, thanks!

Andy