coresight: DT support for etr to usb output on 8974

Add coresight CSR (CoreSight Slave Registers) device and BAM register
definition for TMC-ETR to support ETR to USB output.

Change-Id: I1f9081a0a684a9a6d5b08361be1e09c323a2d4fe
Signed-off-by: Pratik Patel <pratikp@codeaurora.org>
1 file changed