servicemanager: allow to read VINTF files in recovery.

Test: manual
Bug: 206888109
Change-Id: I2b7f0f33c27beb0d4401d1d697fdc58e7c62986f
diff --git a/public/servicemanager.te b/public/servicemanager.te
index 12004da..a812338 100644
--- a/public/servicemanager.te
+++ b/public/servicemanager.te
@@ -31,7 +31,10 @@
 # Check SELinux permissions.
 selinux_check_access(servicemanager)
 
-# In recovery, log to kmsg.
 recovery_only(`
+  # In recovery, log to kmsg.
   allow servicemanager kmsg_device:chr_file rw_file_perms;
+
+  # Read VINTF files.
+  r_dir_file(servicemanager, rootfs)
 ')