mmd: add mmd_shared_status_prop

mmd.enabled_aconfig will be referenced by vendor_init at aosp/3472228.
mmd continue to be the only writer of mmd.enabled_aconfig.

Bug: 393481329
Test: manual

Change-Id: I54cbd0cbb948676fca4c885fedc7abcbe8ce8af9
diff --git a/private/mmd.te b/private/mmd.te
index 1c0eca1..9a76909 100644
--- a/private/mmd.te
+++ b/private/mmd.te
@@ -6,6 +6,7 @@
 init_daemon_domain(mmd)
 
 # Set mmd.enabled_aconfig and zram backing device size.
+set_prop(mmd, mmd_shared_status_prop)
 set_prop(mmd, mmd_status_prop)
 get_prop(mmd, mmd_prop)
 get_prop(mmd, device_config_mmd_native_prop)