libmodprobe: add OWNERS file

Change-Id: I812c0420d982d2c927f40ca43545bdd15bc7b8be
diff --git a/libmodprobe/OWNERS b/libmodprobe/OWNERS
new file mode 100644
index 0000000..4b770b1
--- /dev/null
+++ b/libmodprobe/OWNERS
@@ -0,0 +1,2 @@
+tomcherry@google.com
+smuckle@google.com