[PATCH] dmaengine: bcm2835: fix unexported function

[Eric Anholt]

Ben Dooks <ben.dooks at codethink.co.uk> writes:

> The bcm2835_dma_prep_dma_memcpy() function is not exported
> outside the driver, so make it static to avoid the following
> warning:
>
> drivers/dma/bcm2835-dma.c:616:32: warning: symbol 'bcm2835_dma_prep_dma_memcpy' was not declared. Should it be static?
>
> Signed-off-by: Ben Dooks <ben.dooks at codethink.co.uk>

Reviewed-by: Eric Anholt <eric at anholt.net>
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