jtagv8-etm: Add the authentication logic

Add the authentication logic that depends on the CoreSight AUTHSTATUS
register which indicates whether the etm trace unit debug is supported
on secure device.

CRs-Fixed: 2269506
Change-Id: I9fc030de82c5f2e925545d522c39d9a9b8e5b099
Signed-off-by: Mao Jinlong <jinlmao@codeaurora.org>
1 file changed