[U-Boot] [u-boot] spi/arm-pl022: Add support for ARM PL022 spi controller

[Jagan Teki]

> I completely lost the original thread... I will re-start from V3...
>
> Pls discard this noisy thread,

Please check the below thread for earlier v3
http://patchwork.ozlabs.org/patch/205814/

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Thanks,
Jagan.