vendor.sh: simplify kbc1126 util handling

we don't need to check whether the binary exists, because
make already does that for us.

we still need to check that the directory exists, because
older versions of coreboot did not include kbc1126, and we
do still use older coreboot revisions on some boards.

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

include/vendor.sh

@@ -53,8 +53,7 @@ bootstrap()
 	for d in uefitool biosutilities bios_extract; do
 		x_ ./update trees -b "$d"
 	done
-	[ ! -d "${kbc1126_ec_dump%/*}" ] || [ -f "$kbc1126_ec_dump" ] || x_ \
-	    make -C "$cbdir/util/kbc1126"
+	[ -d "${kbc1126_ec_dump%/*}" ] && x_ make -C "$cbdir/util/kbc1126"
 	[ -n "$MRC_refcode_cbtree" ] && \
 	    cbfstoolref="elf/cbfstool/$MRC_refcode_cbtree/cbfstool" && \
 	    x_ ./update trees -b coreboot utils $MRC_refcode_cbtree; return 0