Hi all,

Last week I came across the issue that building "dtbs" for ARM in a recent
(3.9-rcX) kernel fails if it's done in a clean tree, right after "make
xxx_defconfig". I am quite certain that this used to work in 3.8. The error is
"asm/types.h not found". The problem does not happen if "zImage" is built first
and "dtbs" is built second.

Eventually, I found that the root cause seems to be that "asm-generic" is not
a dependency for "dtbs" or, rather, "scripts" in the top-level makefile.
Building target "zImage" will implicitly build "asm-generic", and subsequent
"dtbs" builds will therefore succeed.

The proposed patch adds "asm-generic" as dependency of the "scripts" target.
I don't know if the proposed solution is the best possible. It does, however,
work for me.

Regards,
-Markus

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