keymaster: protos for attestation

Bug: 38428944
Change-Id: Ie3602f9f58c3c987cb4742d0f5b54ce622ae66de
diff --git a/nugget/proto/nugget/app/keymaster/keymaster_types.proto b/nugget/proto/nugget/app/keymaster/keymaster_types.proto
index 977595c..d56ff16 100644
--- a/nugget/proto/nugget/app/keymaster/keymaster_types.proto
+++ b/nugget/proto/nugget/app/keymaster/keymaster_types.proto
@@ -101,3 +101,9 @@
   NOT_SET = 0;
   ALREADY_SET = 1;
 }
+
+enum AttestationSelector {
+  ATTEST_TEST = 0;
+  ATTEST_BATCH = 1;
+  ATTEST_INDIVIDUAL = 2;
+}