[U-Boot] mtd: nand: lpc32xx slc: disable DMA support in SPL builds

[Tom Rini]

On Fri, Oct 19, 2018 at 03:21:18AM +0300, Vladimir Zapolskiy wrote:

> Testing and analysis shows that at the moment LPC32xx NAND SLC driver
> can not get PL080 DMA backbone support in SPL build, because SPL NAND
> loaders operate with subpage (ECC step to be precisely) reads, and
> this is not supported in the NAND SLC + DMA + hardware ECC calculation
> bundle.
> 
> The change removes a cautious build time warning and explicitly
> disables DMA flavour of the driver for SPL builds, to reduce the
> amound of #ifdef sections the code blocks are minimally reorganized.
> 
> Signed-off-by: Vladimir Zapolskiy <vz at mleia.com>

Applied to u-boot/master, thanks!

-- 
Tom
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