91a2fe4aba27a2d85d9ba165580ba1f3f3252f70
Replaced the wget download of u-boot by a versioned git checkout this allows us to better manage the u-boot and MLO version we ship while still allowing us to build ofline. This changes replaces the BASE_URL setting by U_BOOT_BIN_DIR and also updates to a newer build of u-boot.
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