update/trees: fix infinite loop

when make-all is being executed on a coreboot tree,
the "./vendor download target" command is used, where
target is the tree/board name.

that script then checks whether cbfstool and ifdtool
are built, and if they're not, they then call
./update trees -b coreboot utils bla bla bla

in this scenario, project=coreboot and mode="", meaning
make-all, and the same check that checks whether the
vendor download script should be run, is executed,
which in turn then checks cbutils again

fix the infinite loop by checking whether it was coreboot
utils, as opposed to *firmware*, that is to be built, before
running ./vendor download

Signed-off-by: Leah Rowe <leah@libreboot.org>

script/update/trees

@@ -97,6 +97,7 @@ handle_targets()
 		printf "Running 'make %s' for project '%s, target '%s''\n" \
 		    "${mode}" "${project}" "${target}"
 		[ "${project}" != "coreboot" ] || [ -n "${mode}" ] || \
+		    [ "${target1}" = "utils" ] || \
 			x_ ./vendor download ${target}
 		x_ handle_defconfig
 	done