bootstat: add recovery,quiescent and reboot,quiescent to known set

Reserve recovery,quiescent and reboot,quiescent to known reboot
reasons.

Test: none
Bug: 120624642
Change-Id: I78c52f6db447c9d3980a3f2007471bc7aa60e25f
diff --git a/bootstat/bootstat.cpp b/bootstat/bootstat.cpp
index ed955ea..ea49798 100644
--- a/bootstat/bootstat.cpp
+++ b/bootstat/bootstat.cpp
@@ -293,6 +293,8 @@
     {"kernel_panic,dsps", 166},
     {"kernel_panic,wcnss", 167},
     {"kernel_panic,_sde_encoder_phys_cmd_handle_ppdone_timeout", 168},
+    {"recovery,quiescent", 169},
+    {"reboot,quiescent", 170},
 };
 
 // Converts a string value representing the reason the system booted to an