recovery: fix rebooting

Change I84c0513acb549720cb0e8c9fcbda0050f5c396f5 moved reboot
functionality into init but did not update the recovery partition; so
"adb reboot" and /system/bin/reboot in recovery are both broken.

Change-Id: Ie2d14627a686ffb5064256b6c399723636dff116

etc/init.rc

@@ -38,6 +38,9 @@ on boot
 
     class_start default
 
+on property:sys.powerctl=*
+   powerctl ${sys.powerctl}
+
 service ueventd /sbin/ueventd
     critical
 

recovery.cpp

@@ -1062,6 +1062,6 @@ main(int argc, char **argv) {
     // Otherwise, get ready to boot the main system...
     finish_recovery(send_intent);
     ui->Print("Rebooting...\n");
-    android_reboot(ANDROID_RB_RESTART, 0, 0);
+    property_set(ANDROID_RB_PROPERTY, "");
     return EXIT_SUCCESS;
 }