Now, we can define "Gotoos.mk" for compile c sources.

N/A

Signed-off-by: liminghao <vgotoos@gmail.com>
Now, we can create bootimage use build system.

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Signed-off-by: liminghao <vgotoos@gmail.com>
Add a function which can create a target for kernel, but it not well.

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Signed-off-by: liminghao <vgotoos@gmail.com>