Allow system_server to adjust cpuset for media.codec

Bug: 72841545
Change-Id: I30c1758e631a57f453598e60e6516da1874afcbf
(cherry picked from commit ec0160a8)

private/system_server.te

@@ -105,6 +105,7 @@ allow system_server appdomain:process { getsched setsched };
 allow system_server audioserver:process { getsched setsched };
 allow system_server hal_audio:process { getsched setsched };
 allow system_server hal_bluetooth:process { getsched setsched };
+allow system_server mediacodec:process { getsched setsched };
 allow system_server cameraserver:process { getsched setsched };
 allow system_server hal_camera:process { getsched setsched };
 allow system_server mediaserver:process { getsched setsched };
@@ -113,6 +114,7 @@ allow system_server bootanim:process { getsched setsched };
 # Allow system_server to write to /proc/<pid>/timerslack_ns
 allow system_server appdomain:file w_file_perms;
 allow system_server audioserver:file w_file_perms;
+allow system_server mediacodec:file w_file_perms;
 allow system_server cameraserver:file w_file_perms;
 allow system_server hal_audio_server:file w_file_perms;