uboot-env: Add OWNERS file This CL is populating OWNERS file based on the candidates in the Chrome OS OWNERS status sheet. BUG=b:132095048 TEST=None Change-Id: Ia65a46f167f6b6924c2e573f73528171fc87a748 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/uboot-env/+/1682816