Allow zygote to stat() sdcardfs file.

Bug: 123948473
Test: manual
Change-Id: I2d90c4dc90fbc0828e2f498bcab4801d93492321
diff --git a/private/zygote.te b/private/zygote.te
index ccb18fe..5145593 100644
--- a/private/zygote.te
+++ b/private/zygote.te
@@ -100,7 +100,7 @@
 # TODO: reduce this back to only sdcardfs once b/123533205 is root-caused
 # (Technically "sdcardfs" and "media_rw_data_file" are equivalent, since
 # sdcardfs simply wraps files stored under /data/media.)
-allow zygote { sdcardfs media_rw_data_file vfat }:dir { search mounton };
+allow zygote { sdcardfs media_rw_data_file vfat }:dir { search mounton getattr };
 
 # Handle --invoke-with command when launching Zygote with a wrapper command.
 allow zygote zygote_exec:file rx_file_perms;