[PATCH] kbuild: fix dependency of dtbs targets

[Russell King - ARM Linux]

On Wed, Oct 04, 2017 at 01:27:20PM +0900, Masahiro Yamada wrote:
> The target "dtbs" should depend on "scripts" because it needs to
> build dtc.  The "prepare" target is unneeded here.

Looks fine for ARM, as the only thing the dtbs should depend on is
the kernel configuration (to decide which to build) and DT tooling.

Acked-by: Russell King <rmk+kernel at armlinux.org.uk>

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