Add options to dump Widevine Cdm properties, Widevine Cdm metrics, or both. The valid arguments are Cdm Metrics (m|M) or Cdm Properties (p|P). If no arguments are provided, both Cdm properties and Cdm metrics will be displayed. Test: adb shell lshal debug [drm service] [m/p] adb shell lshal debug android.hardware.drm@1.3::IDrmFactory/widevine Bug: 154027349 Change-Id: I95c10dd7d4274226936295c73be4eb1612c2ef6a