Add mkbootfs to build-tools
So that we can pack/repack mkbootfs data in the kernel tree with
`mkbootfs` instead of `cpio`.
Using `mkbootfs` in the kernel tree has some benefits, one is `mkbootfs`
produces stable output by re-ordering inode numbers and sorts the
archive entries, the other is that this makes the kernel tree behaves
more like the platform tree, so that's one less "platform and kernel
tree differences" to worry about (less mental burden).
Bug: 184490452
Test: Presubmit
Test: OUT_DIR=out ./prebuilts/build-tools/build-prebuilts.sh
Change-Id: I4278184f0fb99ba26613aacc087368209978d7c7
diff --git a/build-prebuilts.sh b/build-prebuilts.sh
index 9b9d261..53463c2 100755
--- a/build-prebuilts.sh
+++ b/build-prebuilts.sh
@@ -71,6 +71,7 @@
hidl-lint
m4
make
+ mkbootfs
ninja
one-true-awk
openssl