upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support

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exynos	…
rockchip	…
uniphier	…
Kconfig	…
Makefile	…
clk-uclass.c	…
clk_fixed_rate.c	…
clk_pic32.c	…
clk_sandbox.c	…
clk_sandbox_test.c	…