Adding MSDL feedback to emergency button click.

Test: manual. clicked on emergency button on different bouncers and
  verified haptic playback using sysui dumpsys and feeling the haptic
  feedback.
Flag: com.android.systemui.msdl_feedback
Bug: 361321945
Change-Id: If2332a7794252aea4e44d963e10bd2d4ef64d1bb