Merge OWNERS files for radio

Test: none
Bug: 296950573
Change-Id: I2bb2bc894d7631e41f3651076b1a8d64400d65c1
diff --git a/radio/OWNERS b/radio/OWNERS
new file mode 100644
index 0000000..67ac2e2
--- /dev/null
+++ b/radio/OWNERS
@@ -0,0 +1,4 @@
+# Bug component: 20868
+
+jackyu@google.com
+sarahchin@google.com