From: Mathieu Chouquet-Stringer <mchouque@online.fr>

If you use O=/someotherdir or KBUILD_OUTPUT=/someotherdir on the following
architectures: alpha, mips, sh and cris, the build process is probably
going to fail at one point or another, depending on the target you used,
because make can't find scripts/Makefile.build or scripts/Makefile.clean.

The following patch fixes this, I greped the whole tree and these four were
the only "offenders" I found.