These patches add the Arm Trusted Firmware procedure for building ATF
for various ARM boards, which is needed by some for u-boot. Allwinner's
branch has not yet been upstreamed, so it needs to override the source
with its own vendor branch.

I've tested these 4 patches by booting my pine64 with this u-boot (after
manually creating the u-boot-sunxi-with-spl.bin)


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Efraim Flashner   <efraim@flashner.co.il>   אפרים פלשנר
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