[U-Boot] spl: fit: Add support for loading FPGA bitstream

[Tom Rini]

On Sat, May 12, 2018 at 10:25:28PM +0200, Marek Vasut wrote:

> Add support for loading FPGA into the SPL fitImage support. The
> mechanism is flexible and allows user to override the actual
> function for loading the FPGA itself. This is because on some
> systems, the FPGA must be programmed to allow DRAM access, so
> loading the full fitImage may not be possible if it contains
> the bitstream. Instead, the spl_load_fpga_image() provides all
> the tools to load the bitstream in parts while programming it
> into the FPGA.
> 
> Signed-off-by: Marek Vasut <marex at denx.de>
> Cc: Tom Rini <trini at konsulko.com>

Note that I had to drop one small hunk that had moved a conditional
informational print from an "old if we have ... set" to "always have" as
this caused SPL growth that caused other platforms to fail to link.

Applied to u-boot/master, thanks!

-- 
Tom
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