Allow entering rescue mode via recovery UI.

Only enabled on debuggable builds.

Bug: 128415917
Test: Sideload package on taimen.
Test: Choose "Enter rescue" from recovery UI.
Change-Id: I913dbdbcffd3179e6fa72ca862f74ca8f1364b02
diff --git a/recovery_ui/device.cpp b/recovery_ui/device.cpp
index ddb0118..e7ae1a3 100644
--- a/recovery_ui/device.cpp
+++ b/recovery_ui/device.cpp
@@ -37,6 +37,7 @@
   { "View recovery logs", Device::VIEW_RECOVERY_LOGS },
   { "Run graphics test", Device::RUN_GRAPHICS_TEST },
   { "Run locale test", Device::RUN_LOCALE_TEST },
+  { "Enter rescue", Device::ENTER_RESCUE },
   { "Power off", Device::SHUTDOWN },
 };
 
diff --git a/recovery_ui/include/recovery_ui/device.h b/recovery_ui/include/recovery_ui/device.h
index 3c44510..8f17639 100644
--- a/recovery_ui/include/recovery_ui/device.h
+++ b/recovery_ui/include/recovery_ui/device.h
@@ -50,6 +50,7 @@
     KEY_INTERRUPTED = 13,
     ENTER_FASTBOOT = 14,
     ENTER_RECOVERY = 15,
+    ENTER_RESCUE = 16,
   };
 
   explicit Device(RecoveryUI* ui);