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
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..976dbfd
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1 @@
+sjg@chromium.org