Rename data/staging to data/pkg_staging.

Test: Build and flash, atest apex_e2e_tests
Fixes: 122999313
Change-Id: I2cfa49d8467d67edc470b1cade3746426fa86e37
diff --git a/private/system_server.te b/private/system_server.te
index a0214e1..6f8a47b 100644
--- a/private/system_server.te
+++ b/private/system_server.te
@@ -477,7 +477,7 @@
 allow system_server zoneinfo_data_file:dir create_dir_perms;
 allow system_server zoneinfo_data_file:file create_file_perms;
 
-# Manage /data/staging.
+# Manage /data/pkg_staging.
 allow system_server staging_data_file:dir create_dir_perms;
 allow system_server staging_data_file:file create_file_perms;