commit ce7bdc58b8f31797a9a8d6aaacf93cbc4def0e8a
author Alex Van Damme <atv@google.com> Tue May 29 15:26:48 2018 -0700
committer Alex Van Damme <atv@google.com> Tue May 29 15:27:55 2018 -0700
tree 7fe2c544e3f79c7180836fcfdf628c33c84df082
parent 67e21dc47f1271550a5912fd3dc36732bdd2771e

Add -F option to mkfs.ext4

- Kokoro's version of mkfs complains because a file is not a block
device:
  mkfs.ext4 -j
  /tmpfs/src/git/out/target/product/imx8m_phanbell/obj/ROOTFS/rootfs.raw.img
  mke2fs 1.42.9 (4-Feb-2014)
  /tmpfs/src/git/out/target/product/imx8m_phanbell/obj/ROOTFS/rootfs.raw.img
  is not a block special device.
  Proceed anyway? (y,n) make: ***
  [/tmpfs/src/git/out/target/product/imx8m_phanbell/obj/ROOTFS/rootfs.raw.img]
  Error 1
- Add -F option to mkfs to silence this warning.

Change-Id: I5084b3406d31d53bee0de48e9fc86e50bb288956