Add m4 to the prebuilt build-tools

Bug: 117561006
Test: OUT_DIR=out DIST_DIR=dist prebuilts/build-tools/build-prebuilts.sh
Change-Id: Ic44d3640e9bbdc776a93dd2f44a767b082bc7c21
1 file changed
tree: 901a054bc08c22702cf48d655e07a184d33aca7d
  1. common/
  2. darwin-x86/
  3. linux-x86/
  4. path/
  5. build-prebuilts.sh
  6. manifest.xml
  7. OWNERS