Remove logd from Microdroid

Logs are now sent directly to /dev/hvc2, instead of being sent to logd
and then forwarded by logcat.

ro.log.file_logger.enabled is statically set to 1 so that the liblog
library doesn't attempt to send logs to logd which doesn't exist.

ro.log.file_logger.path is dynamically set to either /dev/hvc2 or
/dev/stderr depending on whether the VM is debuggable or not.

Bug: 222592894
Test: run Microdroid using the VM tool and see if logs are still shown
Test: logd process doesn't exist
Change-Id: I3412d4f853f2def8ca1e22fece8b6bf1debc3e92
diff --git a/microdroid/ueventd.rc b/microdroid/ueventd.rc
index 340a1f7..fc165c8 100644
--- a/microdroid/ueventd.rc
+++ b/microdroid/ueventd.rc
@@ -26,6 +26,6 @@
 /dev/tty0                 0660   root       system
 
 # Virtual console for logcat
-/dev/hvc2                 0660   logd       logd
+/dev/hvc2                 0666   system     system
 
 /dev/open-dice0           0660   diced      diced