Allow init to mount /odm, /vendor early

am: c3774720

Change-Id: I7ffbc6c1d4213fe68c52ded884bd9db9f6b37fb1

init.te

@@ -20,6 +20,11 @@ allow init properties_serial:file { write relabelto };
 allow init property_type:file { create_file_perms relabelto };
 # /dev/socket
 allow init { device socket_device }:dir relabelto;
+# /dev/device-mapper, /dev/block(/.*)?
+allow init tmpfs:{ chr_file blk_file } relabelfrom;
+allow init tmpfs:blk_file getattr;
+allow init block_device:{ dir blk_file } relabelto;
+allow init dm_device:{ chr_file blk_file } relabelto;
 
 # setrlimit
 allow init self:capability sys_resource;