u-boot builds rely on system mkimage

[Bernhard Rosenkraenzer]

Linaro Android builds that use u-boot as their bootloader rely on having a system version of mkimage installed.

This is bad for 2 reasons: The obvious one (build will fail on systems that don't have mkimage) and a less obvious and more important one: If u-boot ever changes the way mkimage works and the system version is not in sync with what we're using, we'll have a hard-to-spot boot failure.

Since mkimage does get built during the u-boot build process, this is probably just a matter of adding $(BUILD_OUT_EXECUTABLES) to the PATH while building the kernel.

[Botao (botao-sun)]

Comment from Bero:
"not sure if this was fixed, but it's not a priority because so far mkimage has never changed in a significant way. Still should be fixed though given the fix is so simple."

[Botao (botao-sun)]

@Bero, Would you help to close this bug as Won't Fix? If we decide to work on it in future, we can open a new one in Bugzilla to track it.