coverity: exclude deprecated arm driver files

drivers/arm/mhu/mhu_v2_x.c
drivers/arm/mhu/mhu_wrapper_v2_x.c
drivers/arm/tzc/tzc_dmc620.c

Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: If74d7996378b776503897f93efc84e2a482967da
diff --git a/script/tf-coverity/coverity_tf_conf.py b/script/tf-coverity/coverity_tf_conf.py
index 17a0e64..00867ca 100644
--- a/script/tf-coverity/coverity_tf_conf.py
+++ b/script/tf-coverity/coverity_tf_conf.py
@@ -17,6 +17,9 @@
 exclude_paths = [
     ("drivers/arm/tzc/tzc_common_private.c", "File included, actually indirectly analyzed"),
     ("drivers/arm/tzc/tzc_dmc500.c", "Only used by deprecated SGM platforms"),
+    ("drivers/arm/tzc/tzc_dmc620.c", "Only used by deprecated SGI platforms"),
+    ("drivers/arm/mhu/mhu_v2_x.c", "Not used in recent platforms, migrated to MHUv3"),
+    ("drivers/arm/mhu/mhu_wrapper_v2_x.c", "Not used in recent platforms, migrated to MHUv3"),
     ("drivers/marvell/comphy/phy-comphy-3700.c", "File is actually analyzed. False positive"),
     ("drivers/marvell/comphy/phy-comphy-cp110.c", "File is actually analyzed. False positive"),
     ("drivers/marvell/gwin.c", "Not used by any upstream marvell platform"),