keymint/aidl/OWNERS: add drysdale@

Test: none
Change-Id: Ib38b3d4e8e8a41f8bbe3a2c2ad6e53ba10ff8dfc
diff --git a/security/keymint/aidl/OWNERS b/security/keymint/aidl/OWNERS
index a93b171..54d820a 100644
--- a/security/keymint/aidl/OWNERS
+++ b/security/keymint/aidl/OWNERS
@@ -1,3 +1,4 @@
+drysdale@google.com
 jbires@google.com
 jdanis@google.com
 seleneh@google.com