Add sepolicy for DRM AIDL HAL

Bug: 208486736
Test: atest VtsAidlHalDrmTargetTest
Change-Id: Ia2b1488a564d94384d183d30291fbf5a6d2df4ab
diff --git a/private/service_contexts b/private/service_contexts
index 606a018..f1c24ea 100644
--- a/private/service_contexts
+++ b/private/service_contexts
@@ -5,6 +5,8 @@
 android.hardware.biometrics.fingerprint.IFingerprint/default         u:object_r:hal_fingerprint_service:s0
 android.hardware.bluetooth.audio.IBluetoothAudioProviderFactory/default u:object_r:hal_audio_service:s0
 android.hardware.contexthub.IContextHub/default                      u:object_r:hal_contexthub_service:s0
+android.hardware.drm.IDrmFactory/clearkey                            u:object_r:hal_drm_service:s0
+android.hardware.drm.ICryptoFactory/clearkey                         u:object_r:hal_drm_service:s0
 android.hardware.dumpstate.IDumpstateDevice/default                  u:object_r:hal_dumpstate_service:s0
 android.hardware.gnss.IGnss/default                                  u:object_r:hal_gnss_service:s0
 android.hardware.graphics.allocator.IAllocator/default               u:object_r:hal_graphics_allocator_service:s0