Fix sepolicy for bpf object

am: bfa95fcd

Change-Id: I7e6cf042e2e16cff73525fdd6ef754b2d07944cf

private/bpfloader.te

@@ -13,8 +13,7 @@ allow bpfloader fs_bpf:dir  create_dir_perms;
 allow bpfloader fs_bpf:file create_file_perms;
 allow bpfloader devpts:chr_file { read write };
 
-# TODO: unknown fd pass denials, need further investigation.
-dontaudit bpfloader netd:fd use;
+allow bpfloader netd:fd use;
 
 # Use pinned bpf map files from netd.
 allow bpfloader netd:bpf { map_read map_write };

private/system_server.te

@@ -746,8 +746,8 @@ with_asan(`
 
 # allow system_server to read the eBPF maps that stores the traffic stats information amd clean up
 # the map after snapshot is recorded
-allow system_server fs_bpf:file write;
-allow system_server netd:bpf { map_read map_write };
+allow system_server fs_bpf:file read;
+allow system_server netd:bpf map_read;
 
 # ART Profiles.
 # Allow system_server to open profile snapshots for read.