armv7m_trace: get rid of the old tpiu code

Remove all the old tpiu code and replace it with a wrapper that
uses the new commands, prints-out the new commands and informs
about the deprecation.

All the code that handles the deprecated tpiu commands is enclosed
between the comments
	/* START_DEPRECATED_TPIU */
and
	/* END_DEPRECATED_TPIU */
so will be easy to remove it in the future.

Change-Id: I70b0486770128203b923346382d9a90b8ec08439
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/6030
Tested-by: jenkins
Reviewed-by: Adrian M Negreanu <adrian.negreanu@nxp.com>

src/target/target.c

@@ -4945,6 +4945,11 @@ no_params:
 				}
 
 				if (goi->isconfigure) {
+					/* START_DEPRECATED_TPIU */
+					if (n->value == TARGET_EVENT_TRACE_CONFIG)
+						LOG_INFO("DEPRECATED target event %s", n->name);
+					/* END_DEPRECATED_TPIU */
+
 					bool replace = true;
 					if (teap == NULL) {
 						/* create new */