arm64: abort coresight tracing on user faults

Add support to abort CoreSight tracing for user faults and undefined
instructions for 64 bit platform. We already have this support for 32 bit.

Change-Id: Ic5d1f0dbb5c7abbcf5bf95218dd50e18c6677e1f
Signed-off-by: Sarang Joshi <spjoshi@codeaurora.org>