coresight-dummy: update Makefile for coresight dummy driver

Coresight dummy driver supports both dummy source and sink.
update the Makefile to reflect the same.

Change-Id: Ie4781fbb324ce9f7dec422bee11ffb3ffe3c296c
Signed-off-by: Satyajit Desai <sadesai@codeaurora.org>
1 file changed