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/hla_target.c

@@ -630,6 +630,11 @@ static const struct command_registration adapter_command_handlers[] = {
 	{
 		.chain = rtt_target_command_handlers,
 	},
+	/* START_DEPRECATED_TPIU */
+	{
+		.chain = arm_tpiu_deprecated_command_handlers,
+	},
+	/* END_DEPRECATED_TPIU */
 	COMMAND_REGISTRATION_DONE
 };