Adding a reason enum for wifi wakeups

Test: statsd_testdrive 588

Bug: 265742148
Change-Id: I3e3da96acb9a23c0cbff8424472fff237dc5bc27
diff --git a/stats/atoms/kernel/kernel_atoms.proto b/stats/atoms/kernel/kernel_atoms.proto
index 3dc35c1..88d94ef 100644
--- a/stats/atoms/kernel/kernel_atoms.proto
+++ b/stats/atoms/kernel/kernel_atoms.proto
@@ -42,6 +42,7 @@
     enum Reason {
         UNKNOWN = 0;
         ALARM = 1;
+        WIFI = 2;
     }
 
     optional Reason reason = 2;