scripts/make-release: ship u-boot source as a tarball

The u-boot sources we ship currently cause problems with unpacking on
a case-insensitive filesystem due to path conflicts. This has been
fixed in upstream u-boot via commit 610eec7f, but since it is not
yet included in an official release we implement this approach as a
temporary workaround.

Once we move to a u-boot containing commit 610eec7f we should revert
this patch.

Cc: qemu-stable@nongnu.org
Cc: Alexander Graf <agraf@suse.de>
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Thomas Huth <thuth@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Suggested-by: NRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: NMichael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: NThomas Huth <thuth@redhat.com>
Message-id: 20171107205201.10207-1-mdroth@linux.vnet.ibm.com
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

scripts/make-release

@@ -20,6 +20,10 @@ git checkout "v${version}"
 git submodule update --init
 (cd roms/seabios && git describe --tags --long --dirty > .version)
 rm -rf .git roms/*/.git dtc/.git pixman/.git
+# FIXME: The following line is a workaround for avoiding filename collisions
+# when unpacking u-boot sources on case-insensitive filesystems. Once we
+# update to something with u-boot commit 610eec7f0 we can drop this line.
+tar cfj roms/u-boot.tar.bz2 -C roms u-boot && rm -rf roms/u-boot
 popd
 tar cfj ${destination}.tar.bz2 ${destination}
 rm -rf ${destination}