[owners] Add lindkvist@ to global approvers

Change-Id: I513210773601f9014221ddf39350b6ea3ddc685c
diff --git a/OWNERS b/OWNERS
index debdd7f..e4e7a5d 100644
--- a/OWNERS
+++ b/OWNERS
@@ -10,6 +10,7 @@
 jeffbrown@google.com
 jeremymanson@google.com
 joshuaseaton@google.com
+lindkvist@google.com
 mcgrathr@google.com
 mesch@google.com
 pascallouis@google.com