bootstat: Log even more boot reasons.

Bug: 27555866
Test: None
Change-Id: I8ab6597a323f5973d8b1c22c2c7422ef0c2efcc3
diff --git a/bootstat/bootstat.cpp b/bootstat/bootstat.cpp
index 344fa9a..bd611f0 100644
--- a/bootstat/bootstat.cpp
+++ b/bootstat/bootstat.cpp
@@ -169,6 +169,13 @@
   {"wdog_bark", 42},
   {"wdog_bite", 43},
   {"wdog_reset", 44},
+  {"shutdown,", 45},  // Trailing comma is intentional.
+  {"shutdown,userrequested", 46},
+  {"reboot,bootloader", 47},
+  {"reboot,cold", 48},
+  {"reboot,recovery", 49},
+  {"thermal_shutdown", 50},
+  {"s3_wakeup", 51}
 };
 
 // Converts a string value representing the reason the system booted to an