priv_app: move logspam suppression to core policy

No sign of these denials getting cleaned up, so supress them in core
policy.

Test: build
Change-Id: I0320425cb72cbd15cef0762090899491338d4f7c
diff --git a/private/priv_app.te b/private/priv_app.te
index 60fb411..f4cfc17 100644
--- a/private/priv_app.te
+++ b/private/priv_app.te
@@ -114,6 +114,9 @@
 
 # suppress denials when safetynet scans /system
 dontaudit priv_app exec_type:file getattr;
+dontaudit priv_app device:dir read;
+dontaudit priv_app proc_interrupts:file read;
+dontaudit priv_app proc_modules:file read;
 
 ###
 ### neverallow rules